My first thought when I read your letter was OMG they still make those things! I got one has a gift that I asked for years ago and I tried it and lasted about 10 minutes. It was obviously a torture devise~right? I understand your need to escape the pain, I have felt that pain everyday for the last 13 years and I would do almost anything to not feel this way for one day one minute even but not by having another pain replace it. Right now I am having wicked bad belly issues and it has caused my back pain to diminish into the grey areas of day to day life yet my quality of life has not changed. Pain is pain.
I guess I am kinda taking your husbands side in a small way. If you were my wife I'd be worried and that is alright, normal. While in childbirth we don't escape the pain of giving birth by hurting our selves but quite the opposite by thinking of things that are peaceful, calm, serene. So while I don't understand your super human pain control over the Epilator I wish you could find a better way to acheive the same results.
Just to be clear I agree that your husband has reason to worry. I agree that you must do what you must do and as long as it does't get worse your husband should respect your feelings and be supportive. Phew....
Good luck Tammy Toritoo