If physicists believe & postulate such rubbish, Got to question if they've gone mad.
Supposedly the divide between Brilliance & Maddness is very thin.
In an infinite existence with no finite limits, at all, despite the fact you might live in a relatively finite feeling ordered bubble, the tendency is for most possibilities outside of the bubble to seem "mad" and "wacky" because of our rather .. infinitesimal perceptions on what is normal.
Physicists aren't "mad" when they suggest things as a result of infinite possibilities and scale in the universe.
You have to understand that when a physicist suggests that in some universes the islamic god may actually exist, he is also saying that there must be some universes where you have ten thousand cocks and you slam ten thousand wives at a time.
And yeah, you might say "that sounds stupid, it can't be!"
One half of that is right.. it IS stupid.
But in an infinite universe.. it certainly fucking CAN be

Physicists aren't mad - they just aren't 100% thinking about this particular localised bubble of relative order that we call home.