The faulty homosexual arguement
The LGBTIQ lobby has promoted its case largely through "no difference" arguments: there is no difference between a man and a woman ("gender neutrality"); there's no difference between an opposite-sex couple and a same-sex one because in both cases love is the couple's bond and marriage is just a public recognition of that love; there is no difference between a child having a mother and a father and having two mothers or two fathers, again, because love is all that counts.
Without question, love is important for children, but we are learning that other factors, such as complementarity in parenting between a mother and a father, are also important, even possibly because of epigenetic effects - different genes are activated (imprinted) by the different parenting behaviour of a man compared with a woman. All children, including those who will be homosexual, need both a mother and a father.
Yet another consideration favouring children's rights to be reared in their natural family is that almost all of us want to connect with our genetic heritage - to know through whom life travelled to us and to experience what that knowledge means, including informing our own unique identity.
The popularity of ancestry websites and now DNA testing to trace our very distant ethnic origins attest to that. This curiosity or longing may be inherent: a baby lamb or penguin can find its own mother in a flock of seemingly identical adults.
Some people have accepted the pro same-sex marriage argument that it is discrimination to restrict marriage to opposite sex couples. Same-sex marriage advocates operationalize this stance by automatically equating being against same-sex marriage with discrimination.
Those opposing same-sex marriage are also automatically labelled as homophobic, bigots and guilty of hate speech - a "label derogatorily and dismiss the person and their arguments without addressing those arguments" strategy.
People rightly recoil from acting in ways that would constitute such conduct or even just attract those labels and self-censor and remain silent as a result.