A new U.S. census report revealed almost 5 million fathers are now primary caregivers -- nearly double the amount from a decade ago.

These stay-at-home dads have created a new family dynamic in America.

Before David Lesser and his wife Allister decided to have a child, he was a personal injury lawyer.

Fast forward to after their daughter was born. His wife is back at work and Lesser has taken the role of full-time dad.

"I never had that passion as an attorney. I do have that passion as a dad," he said.

Lesser's decision to stay home with their child seemed the obvious choice for the couple.

However, their friends, co-workers and even some family members had trouble understanding their reasoning.

"No one seemed to judge me for the fact that I decided to go back to work. But a lot of people seem to be really comfortable judging Dave," said Allister Lesser.

The man is generally seen as the "bread winner" of the family, and men traditionally found their identity in their job.

So, many people think that if a father is home with the kids, it must be because he has no other option. Lesser says that's not true.

"My feelings of what I think of myself are completely tied to my daughter," he explained.

Many of these dads have banded together, even forming stay-at-home daddy play groups.

"Knowing you're not alone. You can say to yourself, 'I got a posse of other guys doing the same thing, so I'm not an anomaly,'" one father in the group said.

Lesser says he has no regrets about leaving his job and he's excited to report that he and Allister will be adding a baby boy to their family in April.