Why do we play Maplestory?

because we can and its free?

The game is well suited to casual play and its free and easy to play. I myself have spent no money on this game.
there are also parts of the game which are quite fun and enjoyable. the space pirate laser thing for example.
but it is still sad that the high level bossing content will be out of my reach for many years (I'm sure they will eventually nerf the bosses and make the characters more overpowered)