They need to keep their evil entities 'fed'…'placated'…'happy', with blood.
Either sacrifices or other deviant practices.
If you can't get to people/children to shove a dagger into and eat…
Your demons will no longer answer the call when summoned.
It also makes demonic entities gravitate to you due to the 'sexual energy' you exude. They thrive on it.
Think about that the next time you are fapping.
haha.