I have a Twitter account. I think I've logged into it on average about once every year for all of 5 minutes. It's actually surprising to me how much engagement I have on Twitter, I guess people find me organically because I gave a talk at a conference or something. I usually have quite a few mentions from months before when I check it.

Nonetheless, I thought Twitter was doomed to create terrible outcomes from the moment it was born. You cannot share any new, meaningful, and serious thought in 140 characters. Every single one of my experiences and attempts to use it afterwards just confirmed my initial belief. I would much rather interact with people on IRC, via mailing lists, or on HN than do so via Twitter. Twitter is a cesspool.