There was a time that if you weren't on 4chan, you missed everything good. I remember staying awake for 20 hours tracking one thread. If you left it was gone forever and you genuinely missed out. 2004-5 area.
That being said, I haven't been back since 2014? It was always pretty heavily influenced by b and pol, but it got really bad the two years before Trump 1. Alt right bullshit took over completely.
It astounds me that people think 4 Chan is a place for deviants, but Twitter is fine. Twitter is 10,000x worse.