Too heavy for what? Playing music? Sure, yeah it's way too heavy for just that. You have to consider all of its functionality and why it was made though.

Movies, music, podcasts, radio, TV, device syncing, iTunes store...etc.

Terrific I guess is a subjective thing, but considering what the software does for so many people that want/need to use it, I'd say that it HAS to be terrific.

It's not, trust me ... I use it and dread every encounter.