Here's a story that brings up a problem for some IVF participants. A man wanted to continue his family line, but his wife was unable to bear children, so he came up with a solution: Became a sperm donor. Being a choosy guy, and not necessarily wanting to be a real father, though we can't rule that out, he waited 41 years to consent to a couple using his sperm.
We've heard that a couple of families want to keep sperm of a dead husband, ex-husband, or son, but this is different. Sociologist Rene Almeling says that some children will never have even the potential to meet their donor dad because that bio-dad will be long dead.