"I now feel like I'm driving around in a giant inefficient douche mobile. Should I trade the car in for something more reasonable? What should I do?"
Because you are. As to what you should do, that's up to you & the reasons why you initially bought it.
I'm sure others will post with the usual groupthink, buy a Japanese econo-box & use it sparingly. Rationally, they probably aren't wrong & I'm a member of the Japanese econo-box gang myself, but you bought this car, presumably because it's the one you wanted.
A world where every decision is purely rational is far too dystopian for my taste.
If you can afford it & it's the car you wanted, awesome. Don't be the richest guy in the cemetery, enjoy your inefficient douche mobile & consider offsetting the carbon.
if your finances are a dumpster fire, sell it & kick yourself hard for buying it in the first place.