Congratulations Capo - It's a wonderful feeling, isn't it? I'll never forget the day my - $hit, I forgot - but at my age that's normal.
Oh yes, I remember - the day I managed to get to the dealership to see my beautiful black 350z arrive on the back of a truck, still in its protective plastic wrap. Did you manage to see yours all wrapped up?
As for age, it's not age that matters, it's personality. You're either stupid or you're not. I know really cool young people and really stupid old ones. Having said that, as someone who cycles quite a lot, I know that it's young males who generally appear to be the most dangerous drivers. I get the feeling that you're not one of them though.
I have no idea how much experience you have with RWD sports cars, but if you're new to them I have just one helpful tip - be very gentle/progressive with your accelerator foot - if you're brutal with it, you'll lose the back end of the car when you don't want to, even if you're going slowly - especially in the wet.
Am I rambling again? Oh well, it's the privilege we old folks have.
As for the poor M3 owners - they NEED to show off, just to prove they're not driving any old boring saloon car. Whereas you already got the look! Which reminds me...