Treating burn victims is one thing. Elective cosmetic surgeries is another. It's a lightly regulated industry with large profits that doesn't always represent what they could be doing with the recovered tissue.
For profit tissue banks turn human tissue from a gift into a commodity. It's disrespectful to the deceased to profit any more than absolutely necessary from a donation. It's not like there's a shortage (as there are with internal organs).
Radiolab did similar feature on the (big) business of blood donations. http://www.radiolab.org/story/308780-blood-banks/
Please, do whatever you want with your body. I just don't want to be a part of this industry as it is.