Defender all the way. Not a single virus since Windows 7. The thing some people don't realize is that in order for third party AV to work it has to modify the lowest layers of the OS which actually exposes it more to attacks. You have to trust the AV to do its job perfectly or you're screwed.

My source? Just crap I heard online before. Probably bunk. But I stand by my personal anecdote.

I'm annoyed with you mother. Not just annoyed, angry. I'm a grown man now, and I can run my own life!

In the US there's a legal obligation to the shareholders, it's not just as simple as a sick owner culture trumpeting platitudes. To fix this problem we need to address both the culture and the legal frameworks: https://corpgov.law.harvard.edu/2019/02/11/towards-accountable-capitalism-remaking-corporate-law-through-stakeholder-governance/