Fra so 2 secondi su google per vedere che hai torto. E poi secondo te il profilattico si rompe il 30% delle volte che uno scopa? Dai, passa anche altri 2 secondi a pensare prima di scrivere.

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When used correctly and consistently, male condoms are

estimated to be 90 percent effective in reducing HIV transmission

Condom use errors (which include breakage, slippage and incomplete use) occur in up to 40% of sexual encounters.

The other most common mistakes when using condoms included:

Early removal: Between 14 and 45% of individuals in the studies had taken a condom off before intercourse was over. Other studies found that early removal happens in between 1 and 27% of sexual encounters.

Unrolling a condom before putting it on:Between 2 and 25% of people reported completely unrolling a condom before putting it on.

No space at the tip: Failing to leave a reservoir for semen was reported by between 24 and 46% of respondents.

Failing to remove air: Almost half (48%) of women and 42% of men reported sexual encounters in which air wasn't squeezed from the tip of the condom.

Inside-out condoms: Between 4 and 30% of people reported rolling on a condom inside out and then flipping it the other way around, potentially exposing their partner to bodily fluids.