They only say "no" to something you (think you) really need at this moment :) Say, https://jira.atlassian.com/browse/JRA-4446 "Sub-issues should be able to contain their own sub-issues" -- #6 on the list of top voted for.
The OP certainly wasn't trying to be neutral (wikipedia-style), but most of it reads as 'it is 2016, do you know what your operating system is (not) doing to protect you?'
or listen to the radio -- https://www.scenesat.com/ or https://scenestream.net/demovibes/