Amarok is feature rich, and takes advantage of the resources available on newer hardware. Calling it bloated is in my opinion misleading, leading people to think the added functionality is useless. I enjoy many of the fearures in amarok, and see it as one of the master pieces of free software.
You are of course free to enjoy openbox, while some of us enjoy KDE4. I am very glad that KDE is tailored to users with juicy hardware and ability to enjoy functionality abundance. There are enough DE's around for the minimalistic crowd. What I find sad, is how some in the minimalistic camp seem to enjoy bashing KDE. Have you even seen what you are missing out on? Probably not.
Enjoy the cloud. I prefer to have my own data on my own computers.