LOL, I would bet on there being plenty of what you call math challenged ppl still around or what I call normal people, after all, if people bought things just based on math and ROI the economy of every free country in the world would come to a screeching halt. It would be the end of free enterprise.
Well, I think we've discovered the problem! If those people are what you call "normal", you're most probably one of "them". That makes you retarded, in my professional opinion.
In my opinion, that makes you a freak. Only buying things with a positive ROI. I guess you don't own a car, nor a TV, neither do you go to the movies. Nice life.