I think you're confused about a couple of things here.
1) I'm saying to take five minutes and register as a potential donor. If you're found as a match, you're not required to donate. You then get to chose if you want to donate more of your minutes.
2) You're vastly overstating the liklihood that you'd have to undergo surgery to donate bone marrow. This is typically referred to as FUD, and is generally considered a bad thing to do.
1) I'm saying to take five minutes and register as a potential donor. If you're found as a match, you're not required to donate. You then get to chose if you want to donate more of your minutes.
2) You're vastly overstating the liklihood that you'd have to undergo surgery to donate bone marrow. This is typically referred to as FUD, and is generally considered a bad thing to do.