Earlier quoted context omitted.
So do you believe gay people for example, are a threat to a healthy and balanced society? edit: Oh and conservative culture in my land means mostly lots of alcohol. The first time I vomitted from alcohol was as a teenager on a catholic wine fest, by wine gifted to us from the church. There might be conservatives, that are free from drugs, but mostly they just like other drugs. Drugs are a big problem in todays societ…
Well, it's a simple equation from a societal health perspective. As things are currently, society is well below the minimum and ideal birth replacement rates (scarily low in fact). So from that perspective, promotion of homosexuality runs directly counter to what is best for society as a whole versus what is currently seen as best for any one individual.
And about birth rates in general, that is a way longer debate. I would start with world population and limited ressources, but rather leave it at that.