In an age of villainy, war and inequality, it makes sense that we need superheroes. And after trying Superman, Batman and Spider-Man, we may have found the best superheroes yet: Nuns.

“I may not believe in God, but I do believe in nuns,” writes Jo Piazza, in her forthcoming book, “If Nuns Ruled the World.” Piazza is an agnostic living in New York City who began interviewing nuns and found herself utterly charmed and inspired.

“They eschew the spotlight by their very nature, and yet they’re out there in the world every day, living the Gospel and caring for the poor,” Piazza writes. “They don’t hide behind fancy and expensive vestments, a pulpit or a sermon. I have never met a nun who rides a Mercedes-Benz or a Cadillac. They walk a lot; they ride bikes.”

One of the most erroneous caricatures of nuns is that they are prim, Victorian figures cloistered in convents. On the contrary, I’ve become a huge fan of nuns because I see them so often risking their lives around the world, confronting warlords, pimps and thugs, while speaking the local languages fluently. In a selfish world, they epitomize selflessness and compassion.

There are also plenty of formidable nuns whom even warlords don’t want to mess with, who combine reverence with ferocity, who defy the Roman Catholic Church by handing out condoms to prostitutes to protect them from HIV.

One of the nuns whom Piazza profiles is

Sister Jeannine Gramick, who, while working toward a doctorate in mathematics, met a gay Catholic man who asked for religious help. She organized a home service for him that grew into a regular liturgy for gay Catholics in private homes.

In 1977, she helped found New Ways Ministry to support gay and lesbian Catholics. The Vatican tried to suppress her, and her order, the Loretto Sisters, was instructed at least nine times to dismiss her. It passively resisted.

“The Vatican tried to silence me,” Jeannine told Piazza, “and it just didn’t work.”

At a time when much of Christianity denounced gays and lesbians, Jeannine was a beacon of compassion and struggled to educate the church she loved.

“People always emphasize sex, sex, sex,” Jeannine told Piazza. “And it isn’t about sex. It is about love. It is who you fall in love with that makes you lesbian and gay. Love is the important thing here, not sex.”

All this has led the Vatican to investigate and clamp down on American nuns in a harsh crackdown that has been referred to as the Great Nunquisition. In 2012, the Vatican reprimanded a group of American nuns for promoting “radical feminist themes.”

Piazza quotes a nun who said a friend put it to her this way: “Let me get this straight. Some priests committed sex abuse. Bishops covered it up. And so they’re investigating nuns?”

Pope Francis, so far, has continued the crackdown, but he seems more enlightened than his predecessors and maybe he’ll understand that battling nuns is hopeless.

Forgive us for having sinned and thought of nuns as backward, when, in fact, they were among the first feminists. And, in a world of narcissism and cynicism, they constitute an inspiring contingent of moral leaders who actually walk the walk.

So a suggestion: How about if the Vatican spends less time investigating nuns and the public spends less time mocking nuns — and we all spend more time emulating nuns?