Because I'm an iPhone user. And, just a couple of times, I found useful information here.
Can you show me where I "trash talk" iOS and the iPhone? I certainly have pointed out areas where I've had problems. My posts of "trash talking" would be only in reply to the masses here that think the iPhone and iOS is void of problems. And the ignorant posts about other topics, where it's obvious users either haven't used devices they are talking about, or just plain trash talking themselves.
Having the 4S, I obviously think it's the best for me at the moment (well, WAS, back in October when I got it). But, like I said, I'm not blind to the fact that it's not perfect. I'm a fan of facts, not hyperbole and flat out lies.
----------
Not thinking that the iPhone and iOS is perfect = hate.
The next part of your comment is purely subjective though. Superiority of one over the other lies in the needs and wants of the user.