Why would I believe in the vast universe that there isn't life on some other world?
Even if you're a bible believer, you believe there are Aliens flying about outer space ... aka Angels. They aren't from Earth and they aren't human. There's supposedly billions or trillions of them. They have to be doing something other than watching Earth; only need so many for that.
Also, Biblically, how does one "forget" about Noah and family if they're the only humans left? Apparently, your attention is being held by something else, maybe something going on elsewhere in the universe?
These are just my musings, mind you.