I still use Twitter but I think honestly that I could live without it and I reckon most other people could too. It's just force of habit more than anything else. Mastodon, or Threads, or Blue Sky would all be quite happy to pick up the slack. I actually use Mastodon too but I wish the news media would produce feeds for it rather than rely on mirrors.
The place has become a cesspool tbh and with no moderation it only gets worse with each passing day. Blue ticks actually pay to elevate their moronic hate views above others so more moderate and normal voices get drowned out. Musk is mulling charging everyone money to "combat bots" (bullshit), and mulling pulling out of the EU because of their pesky requirements about moderation. I wish he'd do all this stuff and bring the whole thing crashing down.