No you said "anyone using a condom to not get an STD is stupid," a truly sill remark. It's like saying anyone "using a motorbike helmet to protect your skull is stupid," just because some people on motorbikes are still killed or suffer brain damage even while wearing a helmet. Except its sillier because, like I said, as long as it doesn't break condoms are 100% effective against blood-borne diseases like HIV.
Anyhow, your new claim that condoms are "primarily to prevent pregnancy" is manifestly false. It's used for BOTH pregnancy and std protection. And while there are a variety of alternative methods of birth control, condoms are really the only mechanical form of protection against diseases we have.