Personally, I think using scare tactics (men will pretend to be transgender to prey on women and young girls) is a ridiculous reason to be opposed to transgendered people from using the restroom. A predator will prey regardless... the real issue is the ethics/morality (or lack thereof) of being transgendered. We don't address the morality of this issue by outlawing people from going to the restroom they identify with, but by teaching them what the word of God has to say about it.
I agree.. what I don't like is all the attention being brought to this issue. While a predator is going to prey, I speculate that they would at least be hesitant to enter a women's bathroom, before it became a national issue.
We all know that a true transgender man, for example, dressed to the best of his ability as a woman, will most likely pass all but the closest scrutiny, and in all likelihood has been going into women's bathrooms for quite some time. No harm, no foul, because in his mind, he is a woman.
Now that the issue has been forcefully brought to the forefront, where once there was no issue, now there IS. The predator can now dress however badly as a woman, knowing that even if a store employee suspects they are not what they purport to be, they cannot legally prevent them from going on in.
It has simply added an extra, unnecessary "worry" to parents of small children, and other women in general.