Why would a woman with fibroids with no symptoms have to have a hysterectomy?

I know a girl that was diagnosed with fibroids about 10 yrs ago. She has no symptoms except she says she can not have kids because her uterus is out of shape due to the fibroids. She also says that her doctor told her she needed a hystercetomy but she talked him out of it. She was in her mid-30s when diagnosed. I thought you could still have kids with fibroids unless you were having really bad symptoms.