For one thing-You are missing out on the friendly people coming up to you and saying "What a fantastic Blue/Red/Black/Pink bike you have got there. Don't seem to get many people complimenting white bikes.
So it weighs 25lbs- so what. It doesn't have modern gearing- so what. Possibly the wheels could be lighter to help you accelerate faster- so what.
If the bike is comfortable and it will get you out for a PIE ride- that is all you need.
Now if you want to do a century every week- train for the summer holidays in the mountains- Or do a time trial on it- then the bike is not the best around. If that is what you want a bike to do- then ask for suggestions here for a suitable bike- wait for the 50 replys and then go out and buy a new bike that rides the same as your current one. It works.
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How long was I in the army? Five foot seven.
Spike Milligan