I love React and want to be excited about React Native but the process of getting your dev environment setup for it is painfully long with way to many steps.
I know this seems like a silly thing to bitch about but it kills my idle curiosity when I have to set aside a significant chunk of time just to get to the starting line.
create-react-app finally got me beyond that roadblock and I'm deep into creating my first production React UI. Obviously this doesn't solve the problem for React Native, but it's worth mentioning, since it's an official release.
I'm actually okay with the process for normal React, it's just downloading npm and then typing a long list of packages after npm install. It's React Native then I find the 'from zero' to working dev environment process faintly ludicrous.
I know this seems like a silly thing to bitch about but it kills my idle curiosity when I have to set aside a significant chunk of time just to get to the starting line.