The women there need breeding stock! And you're it, like it or not, and you really like it. This is way too good! You have to have sex with a whole tribe full of Women to repopulate the tribe. They have great food, hot Women, and awesome dope here. You live out your days in ecstasy!
You Win Win Win!
(At least until you get too old and fat for them, at which point they cut your throat to drain the blood, and feed your fleshy bits in a feast dedicated to their new sex object. Still, life was pretty good while it lasted.)