Well, no, scared isn't the right word. I'm apprehensive though, and it's because I know the MOBA (.../ARTS/your favorite acronym...) genre is incredibly unforgiving towards newbies. Or, well, the playerbase tends to be. And it's weird, because normally I don't care what people yell in chat. When I played WoW, people raging in Battleground chat actually amused me. But, well, I guess what really worries me is wasting other peoples' time. The MOBA genre tends to put extreme focus on individual skill and as the games are pretty long, I'm worried about being that guy who ruins the game for everyone else.
The only other game in the genre I've played is Heroes of Newerth, and that was only for a dozen games or so, so I'm the definition of newbie. Am I silly for being apprehensive? Is it as bad as I suspect?