I hate it because it feels incredibly crusty. Nothing seems to update without hitting F5, there's annoying amount of jargon and poorly named fields everywhere, and in my company it's also tied into everything from client billing to asset management, presumably because it's sold as something that does everything including breakfast, and all that noise seems to permeate into every ticket type (I can't search for a ticket type or field anymore, there are over 400 types so the autocomplete is useless, I just ask PMs to make them.)