Is Halloween meant to involve sex and erotic intimacy?

If you go to a Halloween party naked from the waist down and tell everyone you came as a horny toad it's perfectly legal.

It's literally celebration day for all saints.

Yes that’s why it was invented

No. Here it’s children dressing up and going trick or treating.

Halloween did arise from a pagan harvest festival, which traditionally included drinking, dancing naked and sometimes group sex..
While the Christian version is more geared toward religious celebration for adults, it has also included getting dressed up and sharing teeats with children (and sometimes with adults as well).

What more is needed, costumes, masks and lust makes for an enjoyable time!!

Usually just candy