Both my '03 Tibby GT V6 and '03 350Z didn't have any kind of traction control (the Tib didn't even have ABS!) but I haven't found the VDC on the 370Z to be all that annoying control-wise. I do hate when it jerks me around in 1st/2nd as has been mentioned earlier, but I also need new rear tires :P I've felt it kick in plenty of times and as long as you don't fight it it does it's job well. I've done track events and races and such and consider myself a competent driver, but I don't mind having some backup. I only turn it off when I fool around in parking lots or am at the track.
4-5 years ago it'd prob stay off all the time