I thought so many times through my life about what I would wish if I had one or three wishes like in those fairy tales. If it comes to it I doubt there is a wish that won't get me in trouble, the kind of trouble others will do to me out of envy or greed.
What would I wish for? As a child I doubt I ever did a wish after blowing a candle or a shooting star.
Would I wish eternal life, richdom? No.
Who knows that if I am forced to do that wish I will wish that I feel happy since no matter how or where I live, how many friends/family nothing eats a person more than feeling miserable.
The idea of a wish is just a means to an end. You really cannot get exactly what you wish for, there are always cutbacks.