Why on earth would somebody not use bc, but yet don't want a baby?

I see so many posts and people bragging about not using birth control... but yet are so against having a baby. Why? Literally condoms are basically free.... They don't feel any different for either party...

I totally get birth control can be expensive, I don't take meds or anything either. We just use condoms. But WHY WHY WOULD YOU HAVE RAW SEX IF YOU DON'T WANT TO BE PREGNANT?? Who actually does this??? I know there are ladies who do this, where y'all at?