And more men are dads than you'd probably think. Up to 91 percent of men age 35 and younger say they're already fathers or they'd like to become fathers someday. But their reasons for wanting to become dads differ a little from the reasons of would-be moms. The main reason men wanted to procreate was to pass on their family legacy and traditions, while 22 percent of women cited caring for and raising a child as their top reason to have kids. Surprisingly, 25 percent of single guys said they'd consider adopting or raising their own child without a partner. Though 88 percent of this group did say they wanted to marry someday. So the next time you think your guy's biological clock might be broken, think again – he may want kids more than you think...and for some unexpected reasons.