It's just as good to go by yourself.
For one, you meet people quick. And they are all up there to ski.
And friends can give you alot of shit sometimes, they can get cocky and then they can get jealous.
If you find a hot ski chick up there, she will be all yours if your friends don't go, otherwise you will all fight eachother for her.
Eat. Sleep. Breathe. Ski.