What is the point of having animation features if Adobe can't provide us with some output formats like animated .gif et al? ePub is useless as an output format.
What's the point? Seriously?
One output format that's easy to do in multiple tools and you find the whole thing uselsess?
Feel free to add your voice to the other 29 people that upvoted this request: Export interactive Document to animated GIF / or Animate CC – Adobe InDesign (uservoice.com)
It might happen one day but I sure wouldn't hold my breath when less than 30 people have expressed any kind of interest.
You pay for a full set of tools that, collectively, run the entire creative industry.
It's not really on Adobe to make every tool do every job, especially not when the set runs together more or less seamlessly for most project needs.
However, I'm with ya in that I won't be satisfied until Adobe adds footnotes and indexing to Illustrator. It's just... due.