OK thanks everyone, I now understand why people like mac pros. I wasn't trying to make a point or anything I was just always curious about who used mac pros and why. I now realize that they are good for anyone who does serious work like music or movies as their profession, or someone serious about doing heavy duty computer things. But for the student, or average computer user, the imac, macbook, or macbook pro is a better choice.
One more question...
Does anyone use a mac pro as a server?
In my dad's office they have a big pc (nothing impressive) and I''ve heard of people connecting mac minis to big hard drive and using that as a server solution. But Xserve + Xserve RAID = lots of $$$