If where you live is relatively flat, you don't have a bad bike for getting around. I ride my Miyata 210 which is hi-ten tubing as my beater bike, but on my long commutes I ride my Bridgestone because I live in the foothills and need something lighter with wider gearing. What you don't have are any braze ons for attaching racks or fenders though (as far as I can see), which is unfortunate. I don't know what fender options you have out there, but you should still be able to mount a Wald basket up front.

I will agree with others that a different bike may suit your needs better, but if you aren't unhappy with your current bike I wouldn't worry too much about replacing it anytime soon if it's not economically feasible.