GFs ;)

Why would it be exciting if girlfriends were like video games...
Gaming consoles and PCs cannot yell / retort.
Absolute control, the guy has on whether to dump the game or continue with it (or go for a different one;) ).
Games wait till you feel like playing.
You can just turn off the gaming console when you are pissed with it. Or change the difficulty level settings when things aren't going your way.
Any game is not going to hate you for playing a different one - no fears of commitment, though addiction is likely.
No strings(wires) attached, literally with wireless controllers.
When things aren't going fine, you can always start all over again or return to some saved checkpoint!
You are with the game everyday... At your own place, in your own room, right under your mom’s nose.
Games get better and better with newer versions every year ( like angelina 08, angelina 09!)