Welp if you want to cast off a 3+ year friendship it is up to you. I won't stop you if you really wanted to cut ties just like that because you're too lazy/self absorbed/shallow/whatever it is to deal with it. If you want to talk about this further, take it to PM.
If you really wanted to work it out you should have respected Sheep's opinion when you randomly added Taro to that chatroom, too. You don't just ignore someone like that and try to justify it with logic like "I don't know corn/rk" even though they were already in the chat before you
I'm sorry, but if you really, genuinely cared enough to really try to redeem yourself besides a little apology thrown here and there you wouldn't have just deleted everyone just like that without saying nothing. You should have said at least something like "This isn't working out" to us and tried to talk it out either separately from person to person you had beef with us.