There is a difference between playing against the house or a computer and playing against other players. I cannot judge which one is more fun though. There are people who find it more fun to play alone while there are also people who find it more fun to play against fellow gamblers.
But majority of us loves playing against physical opponent because we can feel the true meaning of Gambling and having our strategy in action.
it is hard to fight against Computer when the probability are already in program while in actual is need skills and strategy.
It is not just whether a person is introvert or extrovert. It might simply be just a matter of mood.
Mood is very important because this will attract Luck,that's why sometimes in my own experience?
those gambler that enjoying the game and keep on smiling are mostly wins compared to those very serious.