This. My wife and I built our social life when we moved countries, and we had a group of friends that we'd meet every week or two. But only when we invited them. No-one else in the group ever organised anything. It got really tiring. We could not get anyone else to organise a meet, they always had reasons why they couldn't organise one (but could turn up to it fine). We tried a bunch of things, but nothing worked - if we didn't organise it, it didn't happen. We ended up moving away and the whole social group collapsed and stopped meeting.