Do we disregard the simple fact that most elderly people are wiser than we younger ones are, and if an elderly man and woman --who are childless or not-- remain married, they have much to teach the younger ones?
They are also a support to one another, --physically, mentally, emotional, spiritually, financially–resulting in happier humans who are much more likely to be involved in the community as a whole. Statistics verify that elderly people who live with their spouses live longer, healthier lives, and can continue to be “productive”, – which appears to be where you are headed with this argument about “social benefits”.
But the fact is, we as human do not need to produce ANYTHING to be valuable to God. Our worth is not measured by what we give to the state, but by the very fact that we are made in His likeness and image, and therefore of inesteemable value. It matters not our age, our disability level, our developmental stage.
If we follow the “socially beneficial” route, we’ll end up on the slippery slope of eugenics. At some point, if a person rejects Godly morals, there is virtually no way to convince them that gay marriage is a “bad idea.” Instead, the goal would be to convince them that Godly morals are a GOOD idea.
Just a few random thoughts tonight…