That me will last a few years even after minecraft is nothing but a distant memory i think... then it will return years later because it is retro. Also unfortunately Hissing explosion lisp aren't minecraft exclusive so... yeah just have to wait for those to die independently. Yep, Direct X is a MS thing. Good if you have Windows but pointless to you if you don't.
A Large portion of people will have a windows pc. That's not to say they could't have all three though.
I know (using Windows 7 myself). I want it to support all 3. Just saying some people will hate on the stuff that doesn't affect their systems is all. In other words for most people Direct X optimization is great. But if you are not on Windows you care little about stuff not involving OpenGL. That is all.
Some of us are more comfortable with controllers. I rather not spend over a 1000 dollars on a pc when I can spend 499 for a console or less.
It's funny because if you buy the pieces separately and accurately, you can get a gaming PC for 400€ more powerful than the Xbone which is 500€ It's not a matter of money, it's a matter of laziness. People want the fastest and easiest route when spending money.
