Let us be honest with each other. The threat to marriage is not the gays. It is a lack of loving commitment - whether it is found in the form of neglect indifference cruelty or adultery to name just a few manifestations of the loveless desert in which too many marriages come to grief.
Riding a motorcycle on today's highways you have to ride in a very defensive manner. You have to be a good rider and you have to have both hands and both feet on the controls at all times.