>>/1411/
I'm too practical for that. Also wishes are not to be shared or spoken unless it's a live situation. Having them prepared is good for if you see a shooting star for example. For them to work you need to throw them in at once. (Yeah I know it's just space junk etc, but the spirits who look at you see what you see, they see how you react, they made it fall and create a shooting star, so you can wish to it just fine.) 
There are things I will want and need as long as I'm in the physical. Those wishes would only expire when I leave, so I can keep using them. If I can see it all clearly and have the ability myself, I don't need wishes. So they're all formulated to cover for being human.
 >>/1410/
Possibly, there are very few of them in any location.