Firstly I’ll caveat this by saying that we live remotely without good public transport links, so quite a lot of lifts are necessary on a daily basis!
AIBU though in thinking that you should only really be the default lift giver for your own children, and not their friends/girlfriends/boyfriends? So if DS for example was out, he’d need a lift home - but if he has friends/a girlfriend over to our house, they should be picked up by their own parents and it isn’t down to us to pick them up and then drop them back at home again?
Just curious what the norm is amongst other families so we are setting reasonable boundaries.