First off I thoroughly enjoyed CuddlyTomato's posts in this thread, and will look for his posts in the future despite the fact that the last time I cuddled a tomato I was banned from the supermarket.
Anyway, the worst idea that mankind ever had is sharp corners. Seriously, they are unnecesary and hurt extremely badly when you walk into them. They are the most sinister beings on the planet, lying in wait until given the chance to exploit our natural clumsiness. Have I not the right to stumble about in my home without the threat of these pointed demons jabbing into my thighs? I am not the gazelle, who can gracefully leap through whistling blades of the grass. Nor am I the cat, who can manuever through any vertically challenging enviroment like a cuddly ninja (note: not a tomato). I am a man, a man who has difficulty taking off his shoes while standing. A man who can not juggle one object. A man who hits himself in the head while combing his hair in the mirror. A man who deserves to be safe from these unholy beings bred from the unnatural combination of two lines at a 90 degree angle.
What use is a corner anyway? Round things are so much more beneficial. The wheel, for instance. Or the ROUND table. Would it have been nearly as cool if it were the SQUARE table? No, becuase squares have corners. Think of all the sports that use round objects; would any of these work with cubes? Even the small children at a playground understand the negative nature of corners when they use insults such as "blockhead" and "square". Ever heard someone say "He is a well Squared gentlemen, he has his life in order". No, because being square is a horrible thing, as you then have corners which stab people. Hell, even the world we live on is round. If that isn't proof that corners are evil, than you my good sir are arguing with the world.
So thus, my friends, I propose a call to arms. Let us break out the sandpaper, and reduce these monstrosities to their rounded and natural forms, gleefully smiling as we know that through our work, all the problems of the world will roll away.