I'm going to pirate a game
Is it because of the price?
Yes, I cannot afford to buy it. Pirating is easier.
I can understand your desire to have the new game, but it's wrong to pirate software. If you do like the game, make sure you support the developer's work by paying for it legally.
Not really. I don't see the harm.
I know it doesn't feel like it does any harm, but you are taking someone else's work without paying.  You should only buy games when you can afford to do so legally.