I've heard people say I should get a new bike multiple times, and I have to admit I've thought about it a lot. However, none of my friends on newer bikes get thumbs up from passers by, yells from random strangers waiting at traffic lights to get my attention about how much they like my bike, etc. To add to that, for the type of riding I do, my new bike buddy's always say they are impressed with how fast my old bike goes. I know it isn't the prettiest bike out there, so maybe I should just give it a fresh paint job... Nah.
Keep riding it. Your bike is a classic that doesn't need to be the tops at anything because it just has character.
Camelman