I think the reason why we ask 'why' is somewhat obvious: agency assumptions. We have this ingrained disposition towards attributing agency to things in the world. But of course, barring an infinite series, this is going to come to an end somewhere, probably ending in a brute fact.
I wouldn't suggest Krauss' "A Universe From Nothing" on this, to be honest. I think Krauss was playing a semantic game to get more book sales. And hey, I don't blame him. Publishers LOVE provocative titles; tends to get the books off the shelves. That's why we get things like "The God Delusion". But in Krauss' case he very clearly is being to fast and dirty with the word 'nothing', by which he just means quantum foam.
Perhaps you should read up on causality. David Hume's works iare always a good start here.
I wouldn't suggest Krauss' "A Universe From Nothing" on this, to be honest. I think Krauss was playing a semantic game to get more book sales. And hey, I don't blame him. Publishers LOVE provocative titles; tends to get the books off the shelves. That's why we get things like "The God Delusion". But in Krauss' case he very clearly is being to fast and dirty with the word 'nothing', by which he just means quantum foam.
Perhaps you should read up on causality. David Hume's works iare always a good start here.
"The reason things will never get better is because people keep electing these rich cocksuckers who don't give a shit about you."
-George Carlin
-George Carlin