That's true but plastic makes it feel like it's of lesser quality to me.
It's easier to communicate with other iPhone users because that's the way Apple made it, face time only works with other Apple devices, imessage is only for apple devices, just as Blackberry messenger only works on Blackberries, they do it so if a couple of your friends have one you'll get one too so you can communicate easier. All companies do it. Samsung has something called allshare which links all their devices together, same thought process, link all our stuff together easily and people will buy more of our product line. Like I said, they all do it. Apple are just better at it.
Apple can't bring a lawsuit just because a phone is made of metal and glass as you well know. if it was two pieces of glass with an aluminium strip between them then maybe, the fact is the samsung phones in question do resemble the iPhone and that's what apple doesn't like. Tell me this isn't similar...
Like someone else said, people have brand loyalty with cars, clothes, food/drink and many other things, I don't understand why Apple brand loyalty brings such hatred.