Advantages of Piracy
1) It's fast. Piracy is essentially direct download (via torrent or P2P) so unless the content is already available for direct download as is music now and some games via Steam, piracy is faster than ordering the game or going out and buying it.
2) It requires little effort. You don't have to go to the store or fill out an order form, you just find the file and you're good to go.
3) It's free. You save anywhere from $5 to a whopping $65 on everything you pirate.
4) No DRM. Pirated software is generally hassle-free.
Advantages of Legal Purchase
1) You get the manual. Games often come with extra media like manuals, maps, collectible cards, and more. Buying it legally gives you extra goodies in the case of a lot of games.
2) No hassle of storage. You get the game and the case so you don't have to worry about storing one or more giant .iso files on your HDD or having to burn them to DVD.
3) You care. You're supporting the developers and all the people who worked hard to create the game by buying a copy. You are increasing the likelihood of getting another game you like by supporting existing ones.
4) Self respect. You have it.
