Well I didn't get the Z4 specifically for its performance, although it is/was quite decent. 230 hp but lighter, higher power-to-weight ratio than the WRX. I am still a big fan of the sculpted exterior and refined minimalist interior, which I realize may turn some people off, but it does represent a unique vision.
The real beauty part was being able to put the top down. On a nice spring or fall day, or a summer morning, cruising in the open air--ahh, nothing like it. I'll miss that part.