Personally, it's a means for some near-term tax-free (or reduced) cash-flow, in 15 years it will easily pay for my kids college, and be an income replacement in retirement or allow early retirement.  

Is it a house or a Multifamily. 1 unit, 2 units or ten units,  6 kids or 30 kids, is the sister turning 5 or 21.  

I had 2 kids quite young, before I was financially stable, but we made it work, I am the bread winner with a decent paying job, my wife's salary is just under half of what I earn, so if anything should happen to me I don’t want my kids and wife a battle in time financially.

I'm in agreement with how @David Faulkner put it.I was quite frugal (at least compared to my peers) pre-kids. 

I'm 28 with no kids working 2 jobs.

And the kids, if you count 2 hyper active beagles. 

(please don't suggest that I live in one side, I own my primary outright and have a wife & kid that I'm not moving, however I am open to other development options since I own the land. (4 acres) )

You just do the best you can in any facet of your daily life-be that buying things, renting apartments or raising your kids.

My wife and I and our 2 young kids currently live in Ohio. 

Providing for my wife and 3 kids consistantly, without constantly stealing from my own piggy bank, being home every night for dinner and the like are also benefits.