As such, there was nothing i disliked as a Business Analyst during my tenure at Blackrock. What I enjoyed the most, is interacting with various teams like IT, Marketing, the entire sales team and ensuring all the work was implemented as expected without missing any deadlines. Something which i really appreciated the most, was that even at a junior level I was given a certain level of independence to take some decisions.
I like interacting with clients and users - I like to talk to people. listen to people, and help people, which is a good fit for a BA. The only dislike may be having to say "no" in order to manage expectations and deliver things on time. But at least you can also "defer" when saying no and revisit the request later.