One minute in front of the mirror... or a lifetime of raising questions.
What is the best contraception?” — Answering the question.
To empty your bowels, you need to sit on the toilet and relax the sphincter. To release erotic tension in the pelvic floor area, a minute of masturbating in front of the mirror is enough. But some people are so aesthetically unattractive and lazy that to trigger an orgasm, they require looking at someone else's appearance — instead of working on their own look.
An evolutionary milestone: they've mastered using the toilet on their own.
Next level: attempting an orgasm without external help.
There is a difference: do you want an orgasm or a child?
Having sex just for an orgasm is as inefficient as buying the latest iPhone to prop up a table. Sex is intended for conceiving children, so no contraception is needed. Or are you so intellectually underdeveloped that if your child asks, “Did you want a boy or a girl?”, you’d answer, “I just wanted an orgasm.”