[pk_kinetic]

There could be other reasons for disliking it other than not understanding what’s going on. Maybe other people are working on tight deadlines and don’t have the time or mental energy trying to understand an entirely unfamiliar programming paradigm.

I would want to program in functional too, but I would seek out projects or teams that already use functional. I’d never introduce a functional language to an already established team or project, unless of course, I was the CTO and there were clear benefits.

[chrischen]

If you practice domain driven design, you can always start out isolated projects or even just new modules if your code is sufficiently modularized. I started out by making a new library/module with Ramda, and then it's consumed via a function call that anyone programming in any style can use.

Agreed that functional patterns can be hard to understand if you don't know the patterns, but if you do know them they are much easier to understand and reason about the code. It's a long term investment, and one that frankly I believe will be inevitable as more and more people start doing programming work.