I'm not really as liberal as most Lemmings (by no means conservative though) so take this as you will.
I was a cub scout. Was mostly indifferent to it but when my best friend at the time and cousin left, I didn't see much reason to stay.
I think your reasons for support are valid. Some people had bad experiences. That's unfortunate, but I'm not sure it should mean the whole organization needs to collapse. The Catholic Church (I'm a recovering Catholic, by the way ๐) is a little different in that its hierarchy can send career staff to other locations to sweep things under the rug, whereas scouts tend to interact with other parent volunteers who are only there as long as their kids are.