True. I had to setup Jira for our team and must say it was an awful experience. Too many options, hidden in unintuitive places, awful (too verbose) documentation... Everything is just so difficult. Horrible UX. But it was still the best on-premise solution I could find. Trello on the other side is a delight to both setup and use.
I think buying Trello was great move for Atlassian. No way could Jira compete with them in the long run. And now they are even safe(r) from new Trello-like competitors. Brilliant move for Atlassian. Too bad for us users... :(
Had to do the same thing but had a different experience. It was hard to dive in and took some time but now I understand and appreciate the core concepts. There are many abstraction layers ("[...] schemes") and IMO that is a good thing. When you customize workflows etc. you can do that without leaving supported areas. Creating and changing a workflow is very easy. Plus, JIRA has a good pricing.
With ~350 employees and many mixed teams using only Trello would be chaos. In key areas we need fixed workflows (-> JIRA).
Right now we are planning to add Wekan (FOSS trello clone) to our toolchain for workflows which are more dynamic (less "C follows B follow A" + smaller teams - e.g. innovation and some planning).
I think buying Trello was great move for Atlassian. No way could Jira compete with them in the long run. And now they are even safe(r) from new Trello-like competitors. Brilliant move for Atlassian. Too bad for us users... :(