@blindmachine - you must not like scifi very much. the NCC-1701 didn't have a butchers shop in it because like any battleship, it kept stores of meat rather than livestock. they still ate animals. it wasn't until they had the replicators on the 1701-D that they created food on board the ship.

Stop eating meat, fish and eggs people! STOP killing animals! They didn't do anything to us!

... and how to feed 7+ billion people growing just vegetables and fishing?

I don't care what anyone says, I am not giving up meat. And there is nothing wrong with that. However I think we could do things better.

The human race doesn't get to travel in space unless it stops eating animals. Did the Starship Enterprise have a big bloody slaughterhouse in the lower deck? Of course not.