Please don't think like that. I'm one of the people that originally started and actively works towards promoting NSCoder Night Santa Monica located in Los Angeles (Tuesday dinners for Cocoa developers).
The overwhelming majority of newcomers I talk to were intimidated to show up because there were people (like me) that had at least dabbled with Cocoa for years, but they had just started that month/year/hadn't started at all but wanted to start someday and they felt like they would be out of their league and unwelcome to the group.
But you know what? We all have stupid and awesome questions to ask each other. We all have something to offer to the group no matter our experience level. Just showing up and opening up is a huge deal. We have people with all kinds of programming experience spanning decades (including one guy that started programming in general a scant couple months ago). We don't even always talk about programming. It's a very casual event where we talk about film editing (this being LA, lots of people are employed in that industry), baking bread, making ice cream, exercise, photography, and more. The only thing that ties us together is that we all are interested in Cocoa. Nobody is ever obligated to talk at all about anything (other than a brief introduction, but we all share in that even if it's our 50th time at the event) or bring anything to the table if they don't feel comfortable doing so, and I'm hoping that newcomers find this environment to be friendly. The fact that we've had several new people that keep on showing up makes me think we're doing it right :)
I know I am a very antisocial person and I really don't enjoy spending time with total strangers, but being an organizer of this event has made me further appreciate the benefits of networking and coming to terms with my being antisocial. Not everyone out there is expecting to hang out with people who are stupider or smarter than them or that you need to do this or that to participate. You won't know that until you actually go and try to at least introduce yourself to people. Don't worry about it :)
In the event anything really doesn't work out, start your own group. That was my reason for joining in on trying to organize our NSCoder group. Los Angeles is huge and lots of events I wanted to go to would have involved being stuck in an hour of traffic to get there. Lo and behold, there were other people that thought the same as me and our group was born. We had 15 people show up yesterday night, I think we were pretty successful in that regard :)