Do you live in an area with an Airuv? If so, do you use it? If not, do you find it hard?
In London I had no airuv and thus didn't carry but here in Eretz Yisrael I use the airuv weekly. Especially so with small children, however my friend always reminds me he raised 16 kids in an area without an airuv, so it's certainly possible!!
Yes, I do live within an eruv and it enables my "tiny minyan" to have potluck Shabbat dinners more easily because people can carry dishes over to some else's house on Shabbat. (Could also do it where everyone drops off food before Shabbat and picks up bowls later, but that's a lot more trouble.) Actually, more than half of the members would do so without an eruv because they do not observe Shabbat that strictly, but then the more frum members would not be able to eat that food. In fact, I suspect that the reason that one couple never attends potlucks at other member's homes is their discomfort with the Shabbat violations that occur at the homes of the less observant members and the fact that some members will drive over on Shabbat carrying their food to the potluck.
Most of the members of my other "primary minyan" live within a different eruv which is more necessary since more of the members of that group observe Shabbat strictly. Since we do not live within walking distance of those people, it means that we are somewhat outside the main social circle since we cannot invite most members of that minyan to our home for Shabbat or Yom Tov, except the few who live near us or who "travel" on Shabbat.
We have purchased a house that we are renting out to tenants that we will move to in about a year after my son graduates from his public high school so that we no longer need to live in our current area. (The school district is a good one and borders Chicago, so many people try to cheat and send their kids to the schools even though they don't truly live within the district borders. In fact, I just got a letter stating that the district is now requiring that families submit proof of residence every single year.) Anyway, we specifically looked for a home that was within walking distance of our "primary minyan" (and will probably drop membership in the other minyan after we move, although I'll feel kind of bad that it will put a dent in its already marginal size). However, although we looked at many houses within the eruv of that minyan, we don't really like the area because it is more urban in feel and the area is getting more run-down in recent years. Also, we've been told by members who live there or used to live there, that it has gotten increasingly frum so that neighbors would probably not associate with us since we are not frum enough (in addition to the fact that my whole family would not be considered Jewish if they knew all the details of our backgrounds). Then again, we barely know most of our current neighbors, in our ethnically diverse neighborhood where we have lived for 17 years. In addition, none of the houses within the eruv that we looked at were quite right---kitchens were too small, some had poorly done room additions that clearly had heat/cooling issues, location too far from most of our minyan friends, bad lay-out, etc.
So we ended up buying a house that is in the suburb just across the border of the city, but still within walking distance of the minyan (less than 1.5 miles from its current rental location), but literally just outside the eruv. The border of the eruv is the rail tracks in back of the houses across the street. There are only two minyan families with children below grade-school age. Meanwhile, one of those families just had their third child this morning, and another family who we are really good friends with are expecting their second child this summer. When I realized that those two families would have babies, I worried that it would prevent them from being able to come to our new house next year on Shabbat or Yom Tov. I expressed my worry to the friend whose wife is expecting this summer. He assured me that it wouldn't be a problem. This may mean that he thinks the baby will be able to walk (and thus can be carried for a short distance? I don't really understand this heter, but it was explained to me once.) or it may mean that they are willing to "cheat" for the short distance from the border of the eruv to our new house.
One positive aspect of the new house is that it is in a friendly neighborhood that has its own local neighborhood directory (of just the 30 or so families in the immediate few blocks) and hosts a big annual block party and monthly neighborhood potlucks. Too bad we won't be able to fully participate in the potlucks because they aren't kosher---I guess we could attend a potluck bringing our own dish in a disposable container and hope that someone brings a fruit salad that we can eat. But we could certainly never host neighborhood potluck, so I hope the neighbors won't think we're anti-social.
Anyway, I find it ironic that we plan to more from a house within an eruv to one outside an eruv for the purpose of becoming more observant because we will no longer feel the need to sometimes "travel" on Shabbat or Yom Tov. It also means that we will no longer be able to help some elderly 90+ year old members by giving them rides to/from services and events on Yom Tov.