JZeke is right….
 

M-iata
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A-lways
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A-nswer

Good info here but in the end only you can answer the question. If the Boxster is what you dream about and is what will make you happy then my recommendation is to go for it. You're young and have the energy to learn and can research how to do the work yourself. My experience has been that no other car I've owned feels as sporty and gets the lady's attention like a Boxster. If you're family is behind you on this endeavor, go for it. I'd get a Miata, Z3,Z4, Solstice, SLK or other rear wheel drive car over a Civic SI.

Hey now, the Si can be a good car, if you need four doors and want a manual. I have a 2018 and it's got a lot more grip than I expected. Better initial brake feel than the Boxster, although I suspect they wouldn't hold up as long if I ever made it to a track.

I know there are BMW and Audi sedans with manual transmissions out there, but I see too many horror stories with maintenance on the newer ones to be interested. I can work on the older ones, but after owning a Mk4 Jetta, having a Japanese daily driver is kind of a relief.

To me, its not about reliability, cost or any of that. Its simply that a Boxster is too much car for a new inexperienced driver. They need to get some skills and proficiency before going into a high performance car.

I really don't want to read a post here about how a young kid got into an accident in his "new" Boxster and is badly injured or killed or injured or killed someone else. Kids think they are invincible.

Miata is a good choice for a fun first car

At 15, MOST people do not have the mechanical aptitude to service the majority of this car. Not to say It cannot be learned with gifted acuity. At 15 I was changing oil and adjusting valves at the VW dealership. My father had a very early 911. He worked on it regularly mostly with me by his side. I was not ready at that age. At 17 I had a 914, a couple years later my first ragged 911. I lived it. If you do not, buy as previously recommended, a Miata. It's a modern Alfa. Well balanced, parts everywhere, and a lot less frustrating than a car you might not have the resources or aptitude to drive every day. I will say having owned many 9xx series over the years, my Boxster S is the most fun out of all of them. The car is very well balanced and incredibly forgiving with good suspension and tires. Pretty sure the Boxster would win in the babe magnet department as well.. Sorry for the confusing at best response..