You've obviously not played the game =(

I really enjoyed the game from beginning to end. Given Naughty Dog's history I came in expecting great cinematic presentation and dialogue (which they achieved), but what I didn't expect was the gameplay to be so amazing. I played the game on hard for my first playthrough, and from the limited ammo and supplies, to the way the enemies fought during combat (e.g., shooting at you immediately once you pop out of cover, approaching when you run out of ammo, etc.), Naughty Dog really nailed the survival and spontaneity aspects of gameplay.

However, what has impressed me the most is the tiny details in the game. From Joel visually covering Ellie while in cover, to the way you reel back when shot (or the way enemies slump in accordance to how the bullets hit them), to the various dialogue from both the main characters and enemies during combat, those details, while incredibly small, showed that Naughty Dog really tried to capture as much of the emotion and realism of the world even into the combat.

Having "a blast" doesn't make it the best game ever. I had a blast playing through Metro 2033, but that didn't make it the best game ever either.

You raised some interesting points when talking about The Last Story. But then tell me, what is that makes Galaxy the "best" game ever?

Worth buying a PS3 for?
Suikoden 2 is still my favorite ever. If you haven't guessed by my avatar.

now go play Zero Escape : Virtue's Last Reward, its brilliant, and mind blowing.

I doubt Last of Us is as good as the reviewers say, but I'll play it soon

I agree...all games are not all things to all people and there are different gaming tastes around.  But I also think enough of the gaming population had a blast with Mario Galaxy to a point that you can say it has a massive appeal hence making it one of the best games last gen. Majority rules... :)

my opinion is fact and i shall enforce it upon everybody

Fair enough, but good thing I prefer Luigi. Having to beat the game with all the stars to unlock the true hero is deal breaking for me.

depends on what type of games you like. i wouldnt buy a console for one game, i buy it for shit loads of games. but this game is certainly one of the biggest, if not the biggest reason to buy a PS3.