1. Absolutely no desire. No maternal instinct. No biological clock. Just a total void.
2. Conversely, an active revulsion reflex to all things kid. An instinct to stay away.
3. I am pretty much a loner, only interacting with a few close family members and friends. I need a lot of alone time and peace and quiet.
4. I have mental illnesses that I would not want to pass on. It is difficult for me to deal with these, and having kids would aggravate them beyond belief. I just would not be able to deal.
5. I have chronic pain issues, and can barely get around some days. Even on a good day, I'm limited it how active I can be and for how long. I just wouldn't have the physical ability needed to care for a kid.
6. With #4 and #5, I need to have the time and the space/ability to take care of myself. Some days, that's all I can manage.
7. If I can't do it right, then I'm not doing it. Every kid deserves to have a parent that actually can be and wants to be a good parent.
8. I kept my little stepbrother for my Mom one night. It was miserable. He was a good kid, well behaved, etc., but I had to entertain him all night long and it was the dickens getting him to go to and stay in bed. I just wanted to go do my own thing, read a book, and couldn't. I can't imagine an entire life of that.
9. I don't have much money, but if I decide I want to get groceries to make a nice dinner, or get an average bottle of wine, or get a little pick-me-up like a lipstick, then I want to be able to do it, not have to spend every cent on kiddie crap. I feel like I deserve it. Also, I have no idea where I'd get the money needed just for basics for raising a kid.
10. I could not in good conscious contribute to the overpopulation problem or displace a child that could be adopted (if I wanted kids) and given a good home in favor of having One Of My Own.
11. I cannot imagine how utterly miserable it must be to be pregnant, and don't even want to think about how horrible childbirth has to be. I don't do well with pain at all. I would feel like a prisoner to the fetus, having to alter my life just for it to take over my body. Everyone wants to talk about how miraculous it is to feel the baby move, kick, etc. If I had something moving inside me, I'd freak the fuck out. Also, couldn't take my meds while pregnant, and without my meds, I'm ready for the psych hospital.
12. I adore and cherish my feline and canine children. They are all I need and want.