If someone needs to bitch a moan about another 
collector's habits in order to keep from "going 
crazy" may I suggest that perhaps this is wrong 
hobby for that person?  

Yes, I can understand the disappointment of 
missing out on a cel, but as soon as that 
disappointment turns to anger and is directed at 
a specific individual it has gone too far.

Cel collecting should be about enjoying an 
interesting piece of art, not about acquiring 
more than the other guy.  That *will* drive you 
crazy, since there will always be someone with 
more money than you.  Enjoy what you can get your 
hands on, appriciate the collection of others.  
Make friends.  If you can't do *all* of this, 
then this is *so* not the hobby for you.