The rates of pedophilia are higher among furries. Plus, the broad cultural acceptance of them would mean that you would NEED to inform children about them at some point so they don't witness them. At that point, you have a few options:
-Tell the kids that they're disgusting.
-Try and dismiss it, which doesn't always work, because whilst small children are innocent, they're also curious.
-Tell the kids that it's OK to be one.
The latter two are bad options, and the first one isn't a good option either. Therefore, it must be a cultural taboo, and as such, children shouldn't even be exposed to the idea in the first place.