It's a really good framework, and for someone like me who needs to stand up a website from time to time it really is the path of least resistance.
What bugs me is the pain of setting up a new laptop to run Rails. I need node, which means npm. I'm a backend guy, I don't understand how to set up node, what order to do things in, etc. I do it rarely enough that it always seems a fight. Eventually I get it done, but I'm never sure why it finally all comes together.
An installer that puts together all the requirements so my rails just works would be great. The rvm installer will set up rails on top of ruby but won't set up the node system underneath it.