That is simply not true. Kids can teach you many things about yourself that you never knew you cared about. They open a part of this life you would never see otherwise. They are this thing that loves you no matter what and if you are a good parent you do not take that for granted and give it all you got.
I didn’t want any for many years for all the same reasons as many here. And it changed. And it’s great, for me. But if you choose not to or have doubts, don’t. It’s horrible for the kid.