Most of these are easily explainable.
#1 A square box is significantly easier to make rectangular than circular; Have you ever tried to make dough into a square? Not easy. Also, easier to cut; with the circular shape a triangular piece is the only way to evenly distribute the pizza.
#2 There are generally more people in college than in elementary school-more room; more space. Also, most colleges are going to computers which need less space to be used.
#3 I don’t know about you, but mine usually work rather well?
#4 You can write faster. It was invented before computers and typing quickly.
#5 It’s the human response. Generally, when something isn’t working our response is to do it again. Doing it again turned into doing it faster and again with good results. Good results lead to a pavlov effect in which our minds tell us to repeat actions in order to garner results. Harder is just an effect of faster. Another explanation-Perhaps the button didn’t work once so to press harder would be to stimulate the board correctly and thus get it to work?
#6 I like the other commentators response-vanity. To fix one’s makeup or clean oneself up.
#7 Some places do use E, it’s just a matter of preference. F is generally associated with failure so…
#8 There are two legs.
#9 It’s a vocal expression of the release of endorphins one experiences when stretching.
#10 Fun-sized. It’s made for kids. Handed out at parties. Cheaper. It’s easy to come up with some explanation for this one.
#11 I’m going to reiterate what the other commenter said; in french it’s pronounced dooble-vay.
#12 Easier to memorize for children. Also, all those letters are easy to say together. They roll of the tongue and thus are easy to mash together.
#14 It’s a bigger fucking key and we hit it harder.
#15 Why is Santa always an old man that crawls down the chimney while we’re sleeping to give little children presents? Everything is creepy if you make it.
#16 “Heads up” as in “look out” or as in “look at what the fucks coming towards your face”
#17 Genetics and personal style?
#18 The star is a relatively difficult shape because of the proportions between the different lines. The inside lines help us to keep the proportions in order.
#19 Kids. That’s why it’s called fucking Kidz Bop.
#20 It would be a shit load of work to recreate each different character with a new outfit. Also, the outfits make them easier to recognize and thus much more easier to market.
#21 They look like mutated fingers. You also eat them with fingers?
#22 It’s cheap, legal, easy to get, and provides an intense high. Why the fuck not? Besides a shit load of brain damage..
#23 Sex tapes and nosy people. Also because of all of us who hate them continually hating on them. The more something is hated the more famous it becomes.
#24 It’s essentially saying “hi” and ” I’m looking at your facebook page”