Not the original commenter, but for me, several things made me despise it:

* No way of entering code blocks renders the product completely useless for technical teams. (JIRA also makes it particularly complicated with their "code block" element)

* The clunkiness of the heavy-weight JavaScript frontend is inducing a very negative feeling the moment I think about having to open Asana.

* The user interface breaks commonly established UX patterns: Middle click on a card doesn't open the task in a new window, as all other clickable things in a browser suggest. Cross-referencing two tickets is completely impossible (besides cloning the tab and opening two separate tasks in both)