I've seen this question asked on here before. The best response I saw was something along the lines of:
-Sell the small stuff first, and hang onto the more valuable ones.
-Then print out clear instructions for what to do with the cards that you keep
-Have a list of the cards you have, as well as approximate values
-Include instructions on who to contact to help sell them (for example, "contact Xxxxxx at Yyyyyy Auction house, and tell him you want to consign these cards)
-Having the cards you keep graded, will make it easier for someone who is unfamiliar with the hobby to sell them
I also wonder about the future of the hobby. I'm 31, and I'm not sure how many collectors will be around 40 years from now. I'm ok with it either way. If prices collapse, then I can start working on a e107 set