For example, there would be nothing to stop a future court from legalizing the rape of small children under the so-called "right to privacy".
Rape harms the victim and thus rape cannot be justified under any sort of right to privacy.
My not wearing a seatbelt harms no one - can I use "right to privacy" to get out of a seatbelt ticket??
Mightn't one become a projectile if one is not wearing a seatbelt during a collision?
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Yes, and one can become kindling if a car catches fire and is unable to unbuckle the seatbelt, too.