I switch between Link, Pit, and Ike a lot. I also use Samus quite often, but not as much as I did in Melee.
By the way, is it just me or is R.O.B. actually half decent? He's the only character my sister can beat me with, and using him she wins 1/3 of the time. I'll have to wait until I face someone using him on Wi-Fi to be sure though.
I don't mind, people use characters they've gotten used to so far. I use MetaKnight a lot, but I also main Marth and Link, and I'm trying out Sonic there now.
And about ROB, this is the same thing that happened with G&W, people doubted him first and liked him later.
I play a good few characters, so you won't have to worry about that with me Storm
And Sonic.... I personally don't find him that great. He's an easy character to be "good" with, but I'd call him somewhat crappy. I guess we'll have to wait and see until someone gets really good with him.
What are you talking about, I switched between like 10 different characters. And Zero, that was the first or second time I played online, so I would prefer if you wouldn't judge how good I am unless we play again because I've played a whole bunch more now.