@cindylb, bravo for following your gut. I had a bilateral, Prophylactic Mastectomy almost 7 years ago. I did NOT have breast cancer. I also had none of the currently known gene mutations, but a strong family history and dense tissue. I had the procedure done 5 years before my familial age of onset. I had skin, nipple sparing direct to implant.
My situation is out of the norm. I was back to work in 10 days and within 3 months had 90% sensation. It has not been clear sailing, unrelated health issues and capsular contraction in the right breast.
I would do it again without hesitation. And yes, the breast MRIs are no fun,