To have a baby. That is the only way unless you want to adopt.
Some people do it for pleasure, other do it for procreation purposes and possibly both.
Because it's an enjoyable thing that people do when they are intimate with each other.
Generally, people have sex because it feels good!
There are other possible reasons though:
- We are biologically "programmed" to have sex, as it ensure that our species continues to thrive. By programmed, I mean that hormones and other biological triggers make us feel like having sex.
- Sex is also a way of showing affection to someone you care about. It is the closest and most intimate contact you can possibly have with another human being.
- People have sex for all sorts of other reasons too: Peer pressure, improve their status, for money, to improve their relationships, to help their job prospects, to make other people jealous... The list goes on and on!
I dont know exactly! I think just for pleasure or...if they are are attracted towards each other - that causes them do it!
Not everyone has sex. People who are asexual (like me) could care less about it.