What’s annoying is the number of web forms that assume all email addresses must end in .com, .edu, or maybe .net/.org if you’re lucky. And refuses to let you use your nice custom email domain because it’s “invalid”.
So I have a .family address for my “primary” account and a gmail account for fallback purposes.
I had myname.com for 15 years. I let it go when I had email hosting issues, the Covid hit & I scrutinized my cost:benefit of inflating registrar and hosting fees over the years.
I also sometimes use first@firstlast.com because some services don't allow emails starting with keywords, Facebook for example doesn't, or didn't at the time I tried, allow mail / info / admin etc.