Don’t listen to him OP, running your own email server is not “a world of hurt”.
The initial configuration involves quite a few things (DNS records, DKIM, spam filters, …) But it’s definitely manageable. And when all this is setup, you don’t have to touch it anymore, it just works!
I’ve been doing it for years now, and I’m not going back ! Congratulations on doing it, and good luck on keeping it running!