The thing that drives me nuts about Rails is that the conventions I learned everywhere else break down. There's no goto-definition that works in any sane way, I'm left `ag`ing through the codebase for `def whatever`. The amount of stuff I have to keep in my head to understand what any given object is doing (due to magic) is nuts and exhausting at times.
The general impression I get from Rails and Ruby is a desire to be lexographically terse: fewer characters on screen per unit of business logic. On the one hand, you can fit a lot of code in view at once, which has it's benefits. On the other hand, you're sacrificing explicit data for that terseness, and you have to fall back to holding state in your head.
Without a doubt, Rails is powerful, and there's a lot I've loved about working in the ecosystem, but there's very significant tradeoffs to doing things the Rails way.
