I think Deborah pretty much ended this discussion. You feed a snake what you need to feed a snake to keep it thriving. That is all. If you are lucky to be able to switch to F/T they do so. For a small scale hobbyist F/T is far more convenient. I thank my lucky stars all my snakes feed F/T but if they didn't I would be buying live even if it meant I had to drive miles to get stock.
I also have to say that it's ignorance on the part of snake owners to not buy a snake from a location or a breeder where you know their feeding preference. If you don't want to feed live, don't buy a snake that only eats live. Simple as that.