I would have bought a car like the Z years ago if I could have afforded it. However, when I was in my twenties, thirties and forties, I had very little disposable income as a I had a family to bring up, and it was not until they all left home and I was into my fifties that I could afford a decent car. I had two Honda Preludes, which I really liked, before I decided to go for the Z. Nothing I have ever owned, or even driven, has been as exciting and rewarding to drive, and I don't think it makes a blind bit of difference what age you are. If you like driving, you like the Z, end of story.
Oh, and by the way, my first car was a 1954 Morris Minor, bought for £10 in 1969 with a seized engine. I bought a donor car for £15 and swapped engines in my Dad's garage while he was on holiday! I hadn't quite finished it when he got home and he got quite a shock when he opened the garage that night.
Z owner, age 56, and proud of it.