How good of a friend are we talking? I care about my roommate's new nephew. I know his sister, and we've played D&D with his brother-in-law. The baby is, like, a relevant part of being friends with them. Similarly, if he went on vacation I'd want to hear about how it went, especially if anything interesting happened.
On the other hand some of my coworkers at my last job liked to talk about this kind of stuff, and I didn't really care, but it was nice to have something to talk about while I was setting up a new printer for them, or whatever.
The last time I was handing out candy at my old neighborhood, kids would ring the doorbell but then they'd just stand there and stare at me until I handed them candy. You're supposed to say "trick or treat"!
Now I live in an apartment, so I don't get trick-or-treaters. (I have candy just in case, but nobody ever knocks.) My roommate went to hang out with his sister and hand out candy at her place, and apparently their neighborhood has decreed that trick-or-treating ends at 7 sharp now so that nobody is out after dark? I don't get it. I thought staying out late (and, for teens, potentially unsupervised) was part of the fun!