I have some better ones:
5. Portability. You can take your gaming on the road or on the couch, your choice.
4. Flexibility. If you don't like something you can change it, try that with a console game. Mods can make for a personalised experience. You know what you want, and chances are someone else does too so mod away!
3. Dozens of free games to play. Try games like Fallout or Freespace 2 for free.
2. Technological Prowess. You don't like jaggies in your favourite game? Kill them! You want a faster frame-rate, buy a new graphics card. With a console you're stuck with whatever the developer gives you.
1. Direct Download + cheaper games. You're a hardcore gamer and you buy a lot of games? Great you can grab a lot of games cheaply and you can play them without disc checks. So watch out for Steam sales and fill up that hard-drive!
Tease.