It amazes me that many think adult experiences are just a bar or club. Pleasure Island closed because of poor performance. Most nights the place was full of Cast Members that don't have much money anyways. Disney still offers adult experiences that tend to cost premium prices but they are still there.
That's what I don't understand as much either. PI seemed to be more trouble than it's worth, even though there were a few things I would have liked to have done.
FLE, while it's definitely not the only thing I'd want to happen, seems to be a good thing for all ages, and helps open up the most crowded area of the parks to a little more space. Trying to navigate through all those strollers was ridiculous.