At 35 I'm definitely starting to feel more like a grown-up than I ever have. There's nothing in my life that is childish or whimsical. Having fun is fantastic and I never want to lose a sense of that - and also I think you have to have that to put into your work or else it's going to feel stiff.
However I had a chance encounter with an admissions officer of Stevens Institute of Technology who so impressed me by his erudition and enthusiasm for the school that I changed course and entered Stevens Institute.
ACT and SAT each have their own parts of the country. The GRE has its lock on graduate admissions. And so one could blame the companies but really economically they have no incentive to change things very much because they're getting the business.