You are larp.
Does anyone really know "magic?" Just because someone claims having bizarre sex is magic and your body's various responses go haywire (because sex is a powerful stimulus) does not really mean it is magic.
In a sense, one could argue the union between a man and a woman is magical - and who is to say it isn't - but at the same time, sexual abuse grants power over others. Magic or not - power can be had through certain rites, so to speak, just by tricking our bodies and our minds into certain functions.
The question is why the focus of those selling "magic" is often on the idea of power/control over growth.