There's a few negative posts about the forum here; personally I don't think it's changed much and I was one of this sites early members. I even moderated for a bit. The moderator I took over from tried his best to keep any banter out of the forum - this post wouldn't have been allowed; no way. And I suspect his blood pressure increased by about ten points towards the heart failure stage at one point, trying to control all the postings; I wasn't his favourite member!

But most forums are all the same; someone asks a question, the first three-or-four replies are on-topic, and then it goes off-topic. It's a bit like how a real-life conversation goes.
Probably the best advice I could give is - rather than criticise other members of the forum and their posts - why not try to improve the forum with your own posts?
And to answer the original question, I know I spend too much time on the off-topic part of the forum; but I don't like my 'thinking' sometimes, and using this forum distracts me from spending too much time with myself.

I suspect many other people do the same as myself.