I’ve managed to keep my KeePass database for almost 20 years going back as far as when I was a dumb teenager. Back then it was as simple as having a couple extra copies on usb drives and Google Drive, but now I keep proper backups.
My take is, I’d rather control it myself, I am responsible enough to take care of my data, and I actually wouldn’t trust someone else to do it. That’s a huge reason I selfhost in the first place, a lack of trust in others’ services. Also, online services are a bigger target because of the number of customers, and maybe even the importance of some of their customers, whereas I’m not a target at all. No one is going to go after me specifically.