maybe a little bored when you are old

Yeah I want a baby, because I want a family. I dont want to grow old and lonely with my wife and no kids or grandkids to keep us company. I think the reason most people decide not to have kids is because things like money are more important, but to me there is nothing more important than family. 我當然想要跟我太太生孩子，因為我想要一個家。我不想成為一個孤單的老人，沒有孩子和孫子。我覺得有人只想到自己，只想賺錢，但是我覺得家才是生活裡最重要的事情。

Bella@, I will answer this question in chinese, 每个人都有不同的人生, 选择自己的人生是你的权利. 只要你觉得快乐. Everyone has different life, you must choose your own life to be happy every day.

having baby is a good Idia just in the old ages,because when you have a baby you should put all your time for them.They need all your attention till growing in a best way.Actually I like them just for a few minuts after that they get on my nerve.I can't stand their crying.

You can read about the 'Demographic Transition Model' and the 'Fifth Stage' in particular. It is quite common in more developed countries to have less children - the costs are higher and the social pressure is often less.