Yeah, hatred mostly because Jira is the grand enabler of micromanagers and corporate accountability and a bit slow.
It can be whatever people want to use it for. The customisation and the key features of the tool are not bad. Then again, most tools are neutral until a person wields them.
True, those solutions are always horrible. Still don't like Jira that much. Every corp somehow managed to slow that system down to a crawl that using it became a pain.
Still a great fan of Trac. Old but gold, simple and fast. Suffers a bit from a historical focus on SVN, but can be adapted to git easily.