What should I do?

Yesterday I decided. My 2004 Chevy Impala with 100,000 miles on it needed some work done. Should I trade it for something a bit newer or fix the one I have. Problem is who knows what might need to be done on another car. I know what issues my car has. I decide since my car is in great shape inside & out to go ahead and fix mine. Today I had new tires put on the car. My son will replace the rotors and brakes pad to fix my brakes sometime next week. It still will have a couple of other issues (which I may or may not fix, like a couple of the gauges don't work 100 per cent of the time. I feel at peace with my decision and am happy with what I am doing.