Because our social media platform is open to all, we are addressing adhering to the GDPR. In spirit, we already do, but they want what amounts to 5 documents how we use metrics and user data.
(Edit: we use metrics only in a '20 new people signed up'. We treat all data as federal confidential data. We also abide by deletion requests - immediately all user data is zeroed out, and a script overnight removes the zeroed fields. If it should not have been entered, we also will nuke users on backups too.)
If you're doing things respectfully and the right way, the GDPR is a nuisance. If you were hoovering anything and everything, you're in for a bad time.
And given your comments above, I'd put you in the company of "Hoover, Dyson, and Electrolux".
Edit: > "My customers are all happy with my privacy policy,"
Do they have a choice, aside to never use your stuff? If do you force acceptance of the 'privacy policy' on usage of your service? If you, that is in direct violation of the GDPR.
Hope you never want to consider European citizens as a customer. Building in this respect is cheap, but is expensive if you ignore now.
Think of this as "California Emissions". Eventually the US will adopt, even if in defacto. Might as well be on the right side of the fence.