Growing number of single dads use surrogates

Option for single men who don't want to adopt

At 42, Trey Powell is a new addition to the ranks of men who intentionally seek the role of single father. Through a surrogate mother, he's now raising twins.

While others opt for adoption, men like Powell yearn to have children with genetic ties and are willing to invest $100,000 or more to make that happen.

One surrogacy agency says its caseload of single men has risen steadily and totaled about 25 cases last year.

What's driving the men's decisions?

"They say they've always wanted to be a dad, they haven't found a partner that they want to start a family with, they're getting older and just don't want to wait -- the same things single women say," said Madeline Feingold, a psychologist who has done counseling related to surrogacy.