You know, I feel about the same as you do 
recently.  I haven't bought a cel in a long while 
either.  Getting a cel I really wanted in the 
mail just wasn't as thrilling as it used to be 
and pretty much left me wondering "why did I buy 
this?"   I started to lose the interest I had in 
cel collecting almost a year ago but I still have 
a need to hang on.  I've been debating on whether 
or not to try and sell of my collection for the 
money (which I do need) to, but sometimes I still 
feel too attached to it.