Well, I'm sure many bars offer kid type meals too, but that doesn't make them appropriate for everyone. It's not up to Hooters to decide if they allow children into their establishment, it's up the PARENTS to decide if they feel the establishment is fit for their child to attend. Since Hooters makes no excuse for the fact that they are selling sex (and they freely admit that themselves and fully encourage women to take advantage of their assets to make money much the same way models and the like do) I think they are well versed by now on the fact that not everyone appreciates the services they're selling and that not every family in this country finds their restaurants to be the most suitable one for their children.
I don't have a problem with Hooters myself, but I'm not ignorant enough to say that everyone should agree with me and take their kids there just because I feel it's ok. Hell, I wouldn't have wasted any time in applying for a job there when I was younger if one was in our area at that time. I also wouldn't do a thing to try and dissuade MY daughter from working there (and she's gorgeous enough and built well enough that I really don't think hiring her would be a problem).
I'd imagine though that there are a heck of a lot of Christian families (though I'm sure there are other families as well that don't put a stamp of approval on Hooters for their minor children) out there who would rather their child never walk into that restaurant even as adults. Granted, it up to us to decide for ourselves, but simply tossing a stamp of approval on from the establishment; in the way of say a child's menu, really isn't going to win ALL families over and to even believe that everyone should agree with your position is a bit belligerent, IMO.