I don't use twitch. Watching other people play games or whatever is not the kind of content I'm keen on, and I don't watch that sort of content on YT either.

If you find it entertaining though, you do you. Not sure why others' opinions on Twitch would affect your decision unless you want to discuss political or privacy reasons, like providing personal dara/support to platforms owned by Amazon and Google.

I don't really like live streams, much prefer edited content. So while I might from time to time check in on a creator I like on Twitch, it's rare. Also, the platform kind of sucks. YouTube isn't great, but with premium it's bearable and the family plan makes it affordable for our household since we don't do any other streaming services.

Twitch and Youtube both are in the same boat. On the times i do use them i have to have 5 different types of adblock to make it bearable lol.

If you're into self hosting check out Owncast. There's a very small group of us who are trying to get it off the ground. You host your own streaming platform that's shared to the fediverse

Twitch is cool

I used to go on Twitch all the time like 10 or so years ago, but nowadays I rarely go there anymore. Most of the streamers I enjoyed either quit or got too big and/or corporate, and their chats are just meme and emote spam nowadays so I don't even bother with it in case I do end up watching them.

I do watch smaller streamers from time to time, the interaction is much better, but nowadays I prefer to watch VODs so I can skip parts or rewind and so on, it's just a better experience overall for me.

Regarding your question, why delete your account? I mean, if you don't plan on ever using the website again, sure, but otherwise why not just keep it in case?