Definitely. I find when I am working out and in shape, shopping is more of a pleasure. When I'm fat and frumpy, and I can't get those jeans up my ass it's depressing.
So yes excercise is important not only for looking good, but for feeling good, doing well in all aspects of your life and it is a major investment in your longterm health!!
There's a sign in my gym that says "movement is medicine" and I strongly believe in that.
Before I went to the gym I was feeling lethargic and depressed, so it's a good stress-buster too
and then automatically you want to eat healthier too. When I'm excercising I pile on the fruits and veggies.