Begining

And it drove us to extinction, for the men were so transfixed by the women and their hastily-formed knitting circle that a severe process of emasculation soon spread to the men. The men now wore pink bonnets and began speaking in a [i]cartoony [/i] way and prancing about like fairies. Any thoughts of procreation were met by self-heckling and castration became a salient point on the agenda for survival. Soon, the men were marching and their wrists were fluttering like dainty butterflies. There was some talk of delicately prepared food and soon all the men were in the kitchen talking about condiments and drinking tea from bone-china cups insisting that the little finger was crooked. Naturally, the women died of laughter and the men withered away from their own emasculated shame. The End.

Trouble is humans are complex creatures.
Wouldn't be enough to just drop them off.
Humans are a danger to themselves let alone each other !
Everything from breaking a nail to breaking a leg would be difficult to manage so far from home.

I think there was a few laser toys to play with, and maybe a chemistry set and some sheep. But must say it began close to this scenario, or a few germs fell from a meteorite.