Defining maleness as essentially "toxic": If you're liberal and a feminist, it's bad:

This book tells the story of how it has become fashionable to attribute pathology to millions of healthy male children. It is a story of how we are turning against boys and forgetting a simple truth: that the energy, competitiveness, and corporal daring of normal, decent males is responsible for much of what is right in the world. No one denies that boys' aggressive tendencies must be checked and channeled in constructive ways. Boys need discipline, respect, and moral guidance. Boys need love and tolerant understanding. They do not need to be pathologized.

--Christina Hoff Sommers, The War Against Boys

If you're a Christian conservative, it's just fine:

Marriage domesticates men. Men who are not attached permanently to a woman are men that will practice and engage in socially unhealthy behaviors at a much higher level.

But why can't we say that gay "marriage" will socialize men?

Because men don't socialize other men. Women socialize men. And we find that not just in contemporary society, but in all human civilizations, that women as women demand certain things of men, require certain things of men, and that shapes them and molds them in some very important pro-social ways.

--Focus on the Family gay-marriage Q&A

(Actually, those two quotes are consistent with each other if you accept that when Ms. Sommers says that "boys' aggressive tendencies must be checked and channeled in constructive ways," the way it's done is by making sure they're never allowed to be single when they grow up. So I guess the answer is not only a ban on gay marriage but compulsory heterosexual marriage.)