Interestingly, my views on all this have changed through this board and %%% over the years. I've never sought BB, and would never want it, but wouldn't have had a major concern over the whole principle. I guess not least as I generally go for oral & HR over penetrative sex. (Call me weird!)
I feel like I've grown up now, where the instant rejection of anyone offering BB is now standard for me, like with the rest of you.
Though in practise, I suspect my own fussiness and risk aversion has probably kept me away from those circles anyway!