First thing; the size battle. For most, I suspect that they like small. But for me, it's the exact opposite. My hands would be cramped with any of the Sony cameras once I started fitting big lenses.
We like what we like for whatever reason. If you shoot with a phone and you're happy with the results, then you've saved yourself a LOT of money. :-) I'm happy with the results of my stuff PLUS, I like the way it feels and handles and for this dinosaur, that means a lot.