Top things that prevent me from 'de-googling'.
Storage costs. I've no idea where to put or how much it would cost for photo/video/docs/email storage.
Email. Self hosting email is terrifying because email is a magic black box. What email service will still exist in X years. Moving email address is a ballache.
Some of the software is damn good. Especially Maps, including the privacy violating elements, which I've found useful on numerous occasions.
@rpcutts I've heard good things about SpiderOak for file storage. Another option is NextCloud for self-host, or pay NextCloud for hosting.
ProtonMail for email.
Getting away from Google Maps would be really hard. Open source mapping software just can't hold a candle to it yet.
Stream of inane drivel.
Some legacy microblogging.
Carrying bags of sand and what have you.