i got 10 more to help you

1. the controller works better than a mouse

2. More people can play on the PS3 at once--PC doesn't have splitscreen for shooters and good games

3. it can run at 1080p which pc can't

4. a bigger selection of games pc mostly has strategy and rpg while ps3 has a wider variety

5. downloading without a risk of viruses

6. you can get more money for trades if you don't like the game so it will have a use if you get bored of it after warranty

7. it has a browser which can replace pc when multiple people are on it

8. on average the accessories aren't that expensive

9. its psn has a better movie service than pc with renting and buying blu ray movies

10. it is quicker than pc for games and it is a benefit to your dad as well with all of its feautures as you can listen to music download game demos before you play and you can watch movies and do more than a pc which makes it etter its next gen which pc is not