I'm 52 and new to this forum and BMW. Last Friday I purchased my new (used) 2005 325ci convertible and this also represents my first convertible. When I was 16, my first car was a '69 Opel GT!
Nothing wrong with owning a quick and responsive car at a young age in my opinion--- so long as one is totally focused on driving. Driving is the most likely the most dangerous thing we do--Stay safe and enjoy: these are wonderful cars!