See this from a provider standpoint and you will immediately groan at the users setting up their accounts for easy collection from spammers, who in turn use tho

See this from a provider standpoint and you will immediately groan at the users setting up their accounts for easy collection from spammers, who in turn use those accounts to spam your service to oblivion. You'll have to deal with the cleanup, not the spammers, not the compromised users. A lot of users don't value their accounts, and this is precisely why we have so many account breaches happen to this day.