I would certainly not want communism, especially not as it's been classicly implemented. I don't believe a classless society worth living in will be possible before a true end to scarcity; this may or may not be possible with the advent of MNT; some have high hopes.
It's important to note that I refer mainly to material classlessness here; obviously classes of intellect and culture will still exist and you wouldn't want to eradicate them anyway. I would imagine political classes would also exist but hopefully determined by will to participate, not material means.
And why? Well, egalitarianism, basically, and the belief that material means of one's parents should be neither benefit nor hindrance in life.
This is the stuff of essays, not little comments like this, but I hope you get the idea : D