I could get gross and gushy about this obscenely awesome comic convention, so I'm just going to keep it concise and make a list:
Cheap, $15 a day
Lots (LOTS) of trades and resales available
Tons of collectibles, toys, video, posters, etc
Dippin' Dots
Big names come, a longer list each year
Small names too - Indie Island is huge and stuffed with talent, online and print
There's beer
And pizza
Solution to not being a crowd person - come on Sunday
If you haven't been, tsk tsk. Next year's is only 350-something days away - could be time for a forehead tatt.