If I would have had my daughter after becoming sick and banking being available I would have jumped on it.
But, as I said, back then it wasn't an option and I know the initial banking is a bit pricey. Still, if available and healthy I probably would have, at least, donated the blood and tissue.
Personally, I think it is great, especially when you think what good it can do and that it is basically treated like biohazard and discarded of.