I did something similar not once but TWICE! The first time, I was 17 and looking to buy my first car. I had a part time job at the supermarket and didn't have enough for a downpayment on the car I wanted. So I sold my Atari 2600, NES, SNES and gameboy with all the games to get enough for my downpayment. That was more or less a matter of necessity.
The second time, I had just bought an XBOX 360 and decided to trade in my PS2 and games to cut down the cost. I immediately missed my PS2 and bought a used slim version about two months later.
I've been collecting retro to try and not only get all my old stuff back, but to get the stuff I never had but always wanted.....