[bmacho]

That's okay, you have backup of your data, and you don't really depend on your Gmail account for anything important.

[dymk]

I’ve probably got about a thousand accounts that use a Gmail account as the associated email / username. I doubt this is uncommon compared to the number of people with custom domains.

[account42]

The problem here wouldn't be the data but all the people whose only (or at least primary) way to reach you is the Gmail address.