So you don't "believe" in pre-orders? They exist. It doesn't take a god to tell you that. You can't exactly deny the existance of preorders. I know, it's heretical.
Anyway, I preorder games I know will be good. Liiiike, those that have released elsewhere on the planet already. Or games that I know will be hard to get. In this example, Shin Megami Tensei IV. First Edition run gets a bunch of goodies. I would like those goodies. Is it essential? Nope. Is it my money? You damn well better believe it. So I'll preorder it, so I ensure I get my goodies.
For some companies, it may help push a shitty game. But there-in lies the real solution. Don't preorder so soon after announcement. That's what the real problem is. In this case, preordering Shin Megami Tensei IV, the game is already completed. Now something like Aliens: Colonial Marines. Is everyone else to blame for rushing out immediately to preorder it before it was even a month from releasing?
You can say "so wait for it, or order online", but what if you don't want to wait? That's perfectly legal. Perfectly acceptable. Maybe you want to take it someone on a trip with you. Maybe you and a bunch of friends are going to get it and play together.
My advice is to not stop preordering. That's your prerogative. Your choice. If a company decides to fuck it up, well, You kind of already know these various company's reputation. Take that into account first.[b/] But don't put others down because they decide to preorder something.