There was a cause, pretty much by definition. Just because we aren't sure what it was right now doesn't mean that it doesn't exist. And there are lots of theories out there that explain how the beginning of the Universe could have happened, we just don't know which of them (if any) are correct...
Just waffle. Nothing there that points to anything other than wishful thinking.
Yes I'd love to have some way to exist in a meaningful fashion after my death. No I haven't seen anything that even suggests that it's a possibility*. Better make sure I get the beers in now.
*Not saying that...