Sounds like a nice ride. I certainly can't fault you. When I totaled my 02 Civic I was in the middle of a divorce so the natural replacement was a mid-life crisis car, thus the Acura. Same exact chassis and yet I brought my mileage down from 32-36 to 27-30.
Now the GF is thinking about a Subaru with her first winter in the mountains (she's from Texas) and I'm begging her to keep her Protege 5. Ah well, there's the things we can control in life and then there's our loved one's...
Enjoy the new ride and don't feel guilty for a second. I'm sure you earned those aches and pains, so you've also earned a way to cushion yourself from them.