If they were real... MR would not exist, most likely.
But I would probably be on track to graduate with a good GPA, aiming to major in "something sciencey" (and secretly dreaming of somehow getting a job at the School). And would probably have gone through a phase at twelve of sending embarrassing fan mail to the scientists I thought kicked the most ass.
Albeit if I got a two-week vacay in a world where they were all real, I'd at least send Reilly some fanmail squeeing over how awesome he is.