Logically, yes. But humans aren’t purely logical. They’re gonna have sex without access to birth control, even if they don’t want a kid. Not all of them, but a lot of them. So why not just let them have both control?

No, you’re not “maybe wrong”. You’re absolutely and completely wrong seen as abstinence only programs have been shown over and over again to be ineffective. It’s a sad attempt at policing people’s desire for sex

Sex is a basic human need. Having a child isn’t. You need to know you are compatible with your partner sexually or it will lead to tons of strife in a relationship. So not having sex unless you are asexual or a version of it isn’t an option.