Is PSM a Necessity?

I went from a no TC jeep liberty to a DSC(dynamic stability control) Z3 to a no traction boxster.

Jeep could do burnouts on wet pavement but never really needed TC ever.
Z3 could spin the tires easily and I could fishtail it and bring it back. DSC saved me plenty of times, but I drove it like it had TC (full throttle in snow/slick/wet, etc...)
Boxster has been hard of traction in winter, but you have to drive it gently to get it to move. Going from 2 sports cars, one with, one without TC, I prefer the non TC. But ONLY for experienced drivers. If my Z3 didnt have TC i would have wrecked lots. A 16 y/o with a sports car can only be so good. But at 18 I knew my way around the wheel decent enough to stay out of trouble. And I have so far, knock on wood.