i'm in that money situation with you - I've been toying around with my civic for a little over a year now, and haven't done any real mods yet - biggest thing i've done to it is a short shifter =) But it's still my hobby, and I even though i get frustrated that all my money goes to paying for rent, insurance, and tuition for school, I don't look on this past year as wasted time (or money - the little that i've spent on it). This past year has been a total learning experience. I see/meet a lot of people around here with semi-sported out cars (lots civics) and can sit and talk with them about it, and sometimes am even shocked to find that I know more than they do. But I still learn from them, and enjoy talking to them, and enjoy planning out everything that I'm going to do to the car - when I get the money. So the question to ask yourself I guess it, what's not satisfying you? Is it just that your car isn't as fast as you want? Have you lost the interest in learning about it?
Modding cars is a hobby, and like someone on this thread said (I can't remember who, but I'd give you credit if I could remember

) hobbies take time and money - but even more than that, they're supposed to be fun. Hobbies are those things that take you away from the speed (or lack thereof) and stress of living. They're the things that you can talk to someone about for hours on end and never get bored. They're things that quicken your pulse to think about. And when you start looking at it and it's just not fun anymore.... then what's the point?
So step back for a minute, and instead of focusing on what you CAN'T do, maybe look at what you've already done and things that you can do to the car to keep that spark of your hobby alive. And if it's not monetarily feasible at the moment, then keep dreaming about it, and working for it, and when you finally get it, you'll love it all the more. And no matter what anyone else says about it - or if they even notice it - you'll still be able to smile to yourself with that ultimate sense of pride and know that you've made something beautiful. Because that's just how you feel about you car. Because it's your hobby.