Multiply all of our activities. You can see 100 people publish what amounts to the same book. You look at the subject later, and all have disappeared except one. Very little travel literature survives. There may be hundreds of books containing descriptions of the sun rising in Morocco.
Many people write because they're unaware that it has already been done.
So they're happy writing it again, how the sun looks coming up over Morocco. For doing something serious you need the experience of being there, lots of reading and lots of your own reflection. If you saw things, but they did not awaken any reflections in you, there will be no good writing. Some mountain or storm came to exist for us only because Cezanne painted it. On writers and readers.