10-12 years ago my mates all loved 180sx, Silvia's, R33's, 300zx's etc.. They thought the Z was cool and enjoyed driving them but nobody had any interest at all in fixing up a rusty old Datsun. Too much effort etc.. They just wanted the go fast now car.
Whilst I did like the shape of the 180sx I could never like the interior of them, I just found the dashboard so bland. Perhaps the appeal is it's a blank canvas? But for me I just liked everything about the 60s and early 70s in terms of car design. For me the 240z has always felt like the next best thing to owning an old 60s Ferrari.
I guess the best thing about these cars is that their values go up and as they get older more and more people appreciate them, I'm glad I've hung onto mine all these years. All my mates have changed cars (several times) going for the next big power upgrade and taking out loans to buy them etc.. My car might be taking an eternity to restore but good things come to those with patience I say.
The internet has also helped fuel interest in vintage Japanese cars I think with sits like SpeedHunters and the car culture behind it, have helped move these cars from being under appreciated to getting some much more deserved attention. Although in my mind compared to other cars out there they are still under-valued.
Hope you enjoy the hunt for yours, I still recall my first experience in a 240z.