Should a parent allow their teen to have sex in the house rather than behind their back?

this was a maury question of the day and the bigger percentage was no, like only 23% or something said yes. Makes no sense to me, why would rather their child do stuff safely in the house and not behind their back? I know I would, and don’t say well I will teach them not to do that because if a teen especially wants to have sex they usually will find a way unless you keep them completely locked in the house or something, so I think it is much better to let them do it in the house rather than behind your back.