What do you find the most frustrating about collecting

[HIPPEEDUDE]

Hello to all. Have been looking around at my collection lately & realised some of the frustrations i have had with collecting.
It made me wonder what does everyone else find the most frustrating or annoying about collecting.
I dont think anyone can say they dont have any because there will be at least one thing or even more that annoys the heck out of you.
The list of some things i have come up with so far is:

*Evilbay & Painpal-pain in the bum with fees & general BS
*Sellers who take your money & stuff you around
*Deciding what edition of something to get,horrible when there may 7 or more variations with different things in each you want
*Sellers who say items like new but when you get it,its like a cow shat on it & then a train ran over it
*Deciding wether to get everything you like or just stick to a particular theme or platform
* When you buy something for $2 but postage costs you $20
*When you can buy something from somwhere like Amazon for example for $17 but they wont send it to you,so if you want it you
usually have to pay the higher price which can be double or triple the cheapest price.
*Knowing when to stop spending but bloddy hard when you find that elusive item or a deal so cheap you would be mad to say no

Thats a few of mine off the top of my head,whats yours?