I don't think it would make anyone sane, at least, think it would be okay to duplicate those 'experiments'. Especially if we make known the consequences of doing so. But not using the data, if it can help other people, would, as just_ine noted, be disrespecting to those who died horribly. At least their families can console themselves with the idea that their loved ones' lives weren't just wasted. They might just save many more lives. However, I've found that most people aren't so logical about such things. No doubt there are some who would wail and gnash their teeth over the 'disrespect' shown their loved ones. But then, they are likely to do that over any little thing anyway.

I say, Use the data. Save some lives.