Buddhism is a hundred times as realistic as Christianity it is part of its living heritage that it is able to face problems objectively and coolly; it is the product of long centuries of philosophical speculation.
People have been talking about multiverses as a philosophical idea for a long time. But the current incarnations in physics, I think, are more indicative of problems with some things going on at the frontier of physics than ideas that are gonna last.
It is necessary to correct the error that vegetarianism has made us weak in mind, or passive or inert in action. I do not regard flesh-food as necessary at any stage