It does the job(s) I need it to do, and it does them well. It's easy to learn and use. It integrates well into my workflow, and on and on and on. It just makes sense for me (and others).

And as 3doutlaw and SciFiFunk said, you don't have to take out a loan to buy it.

Sure, I believe that DAZ dropped the ball on the latest release, but that doesn't stop me from using the version I own.