How do you destroy a society? By slowly and imperceptibly substituting falsehood for truth, wearing down barriers of decency, and, person by person, breaking apart the fundamental unit of society - the family.
From the outset I will say that all people are loved by our Father in Heaven. All people have value. All people deserve to be treated kindly and with decency. This does not, however, justify breaking down barriers meant to keep families safe.
The world as a whole is slowing being boiled like a live frog in a pot of water. It's an old cliché, but still relevant. While the water in the pot slowly warms up, the frog takes no notice until it is too late to do anything about the hot water - unless someone has compassion on the frog and warns him of the impending danger.
Take a phrase much in vogue today - "love is love". What does that mean? Those who use the phrase hope it will get people to accept non-monogamous or non-heterosexual sexual behavior as just another expression of love. However, there are multiple meanings for love. According to C.S. Lewis, these definitions include Storge (affection), Philia (friendship), Agape (charity), and Eros (romantic/sexual love). When people say "love is love", they are saying that Eros is the same as the other forms of love and should be expressed freely. They confuse Eros with Charity, the pure love of God, or with friendship and affection. If such sexual expression were an example of these other meanings of love, then it could be applauded. But that's not what it is. Sexual expression outside of the bonds of marriage between a husband and wife is not Charity. It is selfishness - self-love.
The pot we are boiling in is filled with the water of selfishness disguised as Charity. Of idolatry of the self, of idolatry toward Eros.
"When lovers say of some act that we might blame, 'Love made us do it', notice the tone. A man saying, 'I did it because I was frightened,' or 'I did it because I was angry,' speaks quite differently. He is putting forward an excuse for what he feels to require excusing. But the lovers are seldom doing quite that. Notice how tremulously, almost how devoutly, they say the word love, not so much pleading an 'extenuating circumstance' as appealing to an authority. The confession can be almost a boast. There can be a shade of defiance in it. They 'feel like martyrs'. In extreme cases what their words really express is a demure yet unshakable allegiance to the god of love.
– C.S. Lewis, The Four Loves, pg. 143-144
Our society has made Eros a god. An excuse for all action.
"Love is love" makes love a demon.