Obviously one eccentric's anecdote doesn't mean anything for something in-any-way scientific, but I deleted my FB about four years ago after I realized that my primary usage of the platform was arguing with people. I spent hours at a time constructing (what I thought were) brilliant arguments for my obviously super-important viewpoints. Eventually it got bad enough to where I actually lost friends IRL because of it, and I figured it wasn't healthy to dedicate so much time to arguing, and I deleted my account.

I feel like a lot of my time suddenly became free, and I get am overall less stressed out. It could just be a placebo effect, but there's about a zero-percent likelihood that I'll reopen my account any time soon.