Twice this year we've been invited to parties (one engagement and one birthday) that have taken place at the home of some other person than the inviter - both friends, not family.
AIBU to find this quite odd? I can't imagine wanting to have people round for my birthday and any of my friends saying 'oh no worries, have it at mine, invite whoever you want' much less can I imagine actually asking a friend to provide a venue for my do.
On neither occasion have we even known the host, maybe met once or twice in passing. It feels really odd to just turn up at a strangers house for a party for someone who has their own perfectly suitable home. With a bit of social anxiety I feel uncomfortable enough sometimes at the homes of people I do know well, without hanging around as a guest of someone I don't.
Maybe this is a thing now and we're just behind the times? 