Having more than one account is really convenient. You could still browse the fediverse if your instance goes down or something else happens to it. Also you might want a new account because you instance federates(or doesn’t) some other instances. But this can also get out of control. I have 5 Lemmy accounts, 2 kbin accounts, on kbin.social and artemis.camp, so I can use artemis, and 1 account on mastodon