Great. Why More Plastic?

I just don't get it. I don't see why Samsung cannot figure out how to make a quality phone without using "Cheap" Plastic. I get they want durability which am all for, but couldn't you use a higher grade "premium" plastic like polycarbonate?

For me I am a fan of enclosed designs, made of quality materials. The whole removable battery argument is getting old. The one thing we are missing on Android is a good choice of premium hardware. HTC has been doing it since the One X, Motorola, Sony, and even LG are giving is more Non-Plasticky options.

Is Samsung just doing this because it knows it is the dominant Android vendor? Dag I really need HTC to step up this year in a major way.