WA15 .... you are spot on......
You can't sanitise the game to the point where bad language becomes an ejectable offence. Its down to the parents to educate and discipline their kids as to where colourful language is and isn't acceptable.
However, while I do have sympathy for those in The Family Stand where it should be less prevalent, even if it is eradicated there, its still likely that the kids will be able to hear it eminating from elsewhere in the ground, so you are probably fighting an unwinnable cause.
Despite how the game is portrayed on the box, watching football will always revolve around a couple of beers, venting your frustrations and hugging perfect strangers of the same sex (in a celebratory fashion you understand ! ).
They've already stopped us drinking beer in view of the pitch and even standing up to watch games at a higher level, for gods sake lets not allow the more sensitive minority removing even more of the edge from the game.