So…how about an example of such a person?

Dave Walker sang for *both* Fleetwood Mac and Black Sabbath.

This is no ordinary jingle. I'm sure someone has jumped head first into a woodchipper over this jingle.

Thanks for that-I think it's reasonably clear that we are expected to believe Trey is the guilty party, or at least, the main guilty party.

"I'll Be There For You" is a horrible song. It's a poor man's Counting Crows, Gin Blossoms, or Deep Blue Something. And those bands were terrible.

I agree. Eugene himself was not what was hard to believe, per se.
What made me think he wasn't a scientist was the lack of specifics about his plan. Abraham confidently announced he was a scientist, and that no one would understand the plan. There was no show, only tell.
I can't tell which other characters were on to…

Only a little bit. So long as people are not on the brink of starvation, I think they would be looking to have sex. Especially young, healthy people.