Open Question: How could society function with gay acceptance?

Example: The world has now accepted gay's as equels. A family has a child, the father tells the child, ''Son you may love anyone you like male or female. Other children are told the same thing. Pretty soon kids are kissing their best friends, as a form of ''play''. Would this be acceptable? Example 2: Gay's are now able to adopt kids legally. This would mean kids now could have 2 fathers or 2 mothers. This would increase the gay culture even further. Example 3: TV shows like this http://youtube.com/watch?v=_qf0puHJ-KM would be broadcasted in america, and brainwash kids into being gay. How can society allow this? Where would the human race end up?