To sell or to keep?

[backguard]

As jb143 said, I should just ask what would this collection be worth in 18 years? What percent would it grow (or decline) at overall?

As background - I just found out that my wife is pregnant with baby #1 --- among my first thoughts (after oh sh&t) was should i get rid of my collection and put it in a college fund. i've always thought of my collection as being something of an investment, but now it actually needs to be an investment or turned into cash and invested.

i've put up a link to a spreadsheet of most of my collection - around 3500 games and 100+ systems - my guess is a value of 20k.

any thoughts would be much appreciated!

http://myfreefilehosting.com/f/bf242811f2_0.26MB

Lastly - if I sold this, I would just sell everything.