that is their price for dealing with magic all the time (i.e. neither dwarves nor fairies are permitted to fall in love, marry, or have a family). It’ll be interesting to find out where fairies come from and whether there are male fairies. The penalty for failing to serve the magic realm by granting wishes would be a fairy losing her wings. It’s not clear whether there would be a penalty for a dwarf failing to mine for diamonds.
Hmmm…interesting as EQ has been unsuccessful in achieving love and family. And Rumple can only have true love if he gives up his power.