The game itself has very limited content and tools both in survival mode and creative mode. Survival mode pales in comparison to something like Terraria. Creative mode doesn't have a lot of tools. To go back to the Terraria example, as limited as it is, you can change the shape of blocks in that game. And it has many, many more decorative items that enhances building, even if it's a 2D game.

Minecraft becomes great/amazing because of what the COMMUNITY does with mods. Which is why I can't give it a good rating.