Why do people have children?

Because it's what they say you need to do. 

My Grandfather suffered and my Mother is suffering from Early Onset Dementia, I suffer from a bunch of ****. 

I will end my name with me.

Wash your mother and wipe her *** everyday and still care about a bunch of ***** who pop out kids for a tax return. I think Im done caring  for them now.

Because they want them I'm assuming lol. If you don't want kids though don't have any. There's no sense in doing something just bc everyone else is doing it.

THE SIMPLE ANSWER:

Because the human body is designed for co-creation.

i don't know but it's getting outta hand, there's too many people on this planet can everyone just relax with the babymaking what is the point

Financial incentives .

To have someone to mow the lawn and clean the car

It's a by-product of sex. 

To reproduce so we humans doesn't go extinct. And of course, to build a family.

they like kids.........

Future organ donors.