Ya know, a WRX is actually a pretty nice car to drive as a daily. It's pretty comfy, and at least it's got the potential for modding, if you want to.
I've had several friends with 2003's, and one with a 2006. I've driven them all. They are comfortable, roomy, and nowadays they are VERY well-priced.
When I have kids, and I need a 4-door...the first 3 cars I'm gonna be looking at are 4-door G35's...4-door Lexus's....and probably a WRX. :P