Kevin, you don't need to see it as a mid-life crisis. I just turned 25 when I bought my first Porsche, a old 930 (911 Turbo). I have learnt a lot, had lot's of fun and car appreciated enough to be worth a bit more when I sold it (minus the upgrades/maintenance which I regard as schooling fee).
So there is nothing to be afraid of. It's a nice hobby which doesn't necessarily have to be financially bad decision either. Do your research before purchase and don't worry too much
There are much more expensive hobbies around...