I am ASP.NET developer from last 5 years and still loving it. There are lots of good voices in air about Ruby on Rails. I want to ask to community, Is there any worth trying to
1) Scalability
Rails is just as scalable as any other web-application stack. The only difference is that your single server might get overloaded, and require splitting to 2 servers sooner than it would in .NET due to the slower performance of the ruby runtime. In practice this is not a problem.
2) Documentation
Microsoft do provide better documentation for the core libraries than Ruby or Rails, but the ruby/rails ones are still on the whole very good. I'd consider ruby/rails to be the winner here for the simple fact that you can always view the source for everything. No amount of documentation is a substitute for being able to actually see what's happening.
3) Community Support
I've been nothing but impressed by the community support around rails. I don't know what else to say there.
4) Hosting Solutions
Since phusion passenger got released, It seems to be easier these days to find rails hosting than it is to find ASP.net hosting. This is only going to sway more towards rails as time goes by for the simple fact that hosting companies do not have to pay royalties towards microsoft to deploy rails on linux servers.
5) Deployment ETC.
Capistrano (the most common deployment solution for rails) beats everything else hands down.