Uh, no, you just don't notice the absolute gobs of CGI used in tons of films because it is meant to look hyperrealistic.
There are several, several youtube videos showcasing the incredible work of studios like Industrial Light and Magic creating most of the backdrops you thought were shot on location.
There are several, several youtube videos showcasing the incredible work of studios like Industrial Light and Magic creating most of the backdrops you thought were shot on location.