I know this is an old thread, but for some reason came up on Google...
I hate dawdling. I hate small talk. There are often times I need to get home to get DD ready for clubs, dinner sorted etc. It would drive me mad to have to talk to the same parent every day and walk slowly. I'm happy to say 'hi' but often ensure I don't end up walking with others (sending DD back in to find cardigan/lunchbox etc), I find it really uncomfortable. If I'm picking up straight from work, I am desperate to get home.
As for presents, I find it inappropriate to buy presents for other children without agreeing with the parent first. DD is lactose intolerant so an Easter egg would really annoy me. We also make a point of only buying one or two and ensuring both children get exactly the same amount. If DD got one but not DS it would cause arguments and I would not be thanking the parent! Two years in a row, on the last day of term before Xmas, a friend of DD gave her a book as an Xmas present. We couldn't reciprocate until the New Year, which felt too late and then felt I'm only doing it out of guilt not because I wanted to, and DD started making a list of all the friends she wanted to get presents for. We had to say "no presents for friends" as it was too expensive.
As for play dates, I find them a pain. All the drop off and pick ups and it upsets our family dinner so we don't eat together. She keeps getting invited and I want to say "no, it's too much faff, she has homework or clubs to go to". We've also had to cancel after-school childcare and get no refund on this which is annoying. So it costs us still and now it's inconvenient!
There are two sides to this and we only heard one.