One should buy a game because they want to play it, not because for 'collecting' purposes. After all, that's what a game is for, right?
I didn't care for the game until I played the demo, which after I knew I wanted to get it. So what did I do? I pre-ordered the game from Best Buy right away. At this point the Amazon pre-orders had already sold out. Best Buy was taking pre-orders for the CE long after Amazon had sold out, so if you had missed out on this, there's really no other way to put it other than 'if your own damn fault'.
There is no right or wrong way to buy a game.
Some games I buy, beat and get rid of before they deflate in value. Others, I collect; I've been collecting retro games for almost seven years now. It is a modest collection, but it is also cool to see some purchases go up in value. It's a hobby to some. Everything I collect I play.
Great example is grabbing a mint Chrono Trigger, CIB, with official Nintendo Power Strategy Guide for an even $100 several years ago. The guide fetches an easy $50+ today and the game sells around the $180 mark.
To each their own, but when gamers see the word "collector's edition" most of the time, they assume it will not be out of stock. While most LEs do not go out of stock, some do. And an RPG like this one had all the red flags that it would - had it been labeled a LE, IMO.
Limited prints are even great examples of games that will soon go rare, but again, not always. Look at Pandora's Tower as an example.
Some people collect games they will never play - some even collect games that are sealed and keep them that way. Every game I own, I play or plan on getting to. My collection includes NES, SNES, a lot of PS1 black labels, Gamecube, Dreamcast, PS2 and even some PS3 games (and by PS3 I mean I refuse to sell them).
I don't think I'll pay for my kid's college education (whenever I have a kid) with my collection. It is a hobby, and part of the fun part is seeing games go up in value. As games move more and more toward digital download (we're several years away from games almost becoming entirely DD) people like me, and others on this forum, will want the physical copies of games they once loved.
I'm not in it for the money - I don't think I can part with anything I deem in my collection - I do it as a hobby. And that's how I buy games.
"One should buy a game because they want to play it, not because for 'collecting' purposes."
That's your opinion, one I don't agree with, but you don't have to agree with mine, either.