Primarily. Secondarily, to avoid putting all my eggs in one basket. As in, not using one singular network of services, and instead spreading it out. Diversify yo services.
One of the reasons I do it is because Google is a bad partner. They will cancel your accounts and delete the contents for no reason, offer no way to get it back and they just don’t care. They will happily do that to companies that pay them thousands a month, they really just don’t care. Even if you don’t buy into the company being evil and privacy invading its also just unreliable to use as any moment they could blow all your data away without reason.
Privacy is a concern but not the primary concern. Google is too big to be in your life. If you use Google it’s in everything. If Google ever kicks you out your life is going to be very difficult while you rebuild your entire digital profile. Google’s too much of a risk.
Not to mention Google is demonstrated they will kill services at the drop of a hat. So relying on them is asking for trouble.
Google heavily uses algorithms to identify accounts to delete or block or ban. And this goes back to if your entire digital life is tied to Google and they do block you, you have no recourse. Google doesn’t talk to humans for reconsideration. You’re just out of luck.
Google is too much of a risk for a stable life
Most seem to mention privacy. Choice as important as privacy. Do things your own way. Selecting the services you want to do common things on your device. As I went along I realised how deep google enforcement was and how hard they made choice for users. That made me want to rip off even more google from the device. I came to a state that I host every service I run my self.
That’s why it’s called a walled garden. If you’re enjoying the garden, you don’t notice the walls. Until the day you get tired of it, try to leave, and suddenly you realize just how high the walls have gotten when you weren’t paying attention.
That’s partially why the Integrity bullshit with chromium is worrying: the average user will not appreciate the issue until it really affects them, and by that point, it will be far too late.