Like many of the other people have said once you are older and out of the house you will always be able to get more dolls. When I was young I only had three dolls for the longest time. I didn't worry about about not beening able to get any more dolls because I knew they would always be there. I think now a days people your age are more worried because they have limited edition dolls, clothing etc. And they are always retiring things. If this is one of the reasons why you are worried, because you like a doll that will retire I would just explain to your mom how much the dolls go up in value after they retire. Show her the dolls on ebay and how much you would have to spend to get one once they retire. Tell her that you can always sell the doll for more that it is worth. Good Luck!