Relevant for those who don't want to get rid of infinite scroll sites completely: When opening such site, go several pages down immediately and work your way u

Relevant for those who don't want to get rid of infinite scroll sites completely: When opening such site, go several pages down immediately and work your way up instead of down. That way, you have a clear end and you've decided already how much time you want to spend there and can just quit when you get to the first post.