Found this article from 2015 which talks about human sacrifice practiced in the world today. It mentions the common reason for "human sacrifice in the west" is sexual, but gives no details for stating the reason.

http://www.mirror.co.uk/news/world-news/human-sacrifices-still-taking-place-5999139

By Warren Manger

23:45, 3 JUL 2015Updated08:40, 4 JUL 2015

Human sacrifice is far more common in countries like India where a minority of tantric shamans still promote it to gullible communities of uneducated peasants.

Best known in the West as techniques to prolong and ­intensify sexual pleasure,

With more reports from Nigeria, Liberia, South Africa, Namibia and Zimbabwe, there are fears human sacrifice is spreading. It seems these dark and terrifying rituals are anything but a dying art.