well here's my 2 cents worth.
to be honest i must admit that it's probably not too difficult to take a decent nature/landscape/scenary shot. one just probably need to be at the right place at the right time and you'd probably get a good-great shot. but wait! that involves luck. and not everybody has it all the time. so the rest of us earthlings would just have to struggle on taking half-baked-decent landscape shots. so what's the difference between those pictures taken? one word: LIGHT.
Light is the reason why a photographer will revisit a particular spot a hundred times and all times of the day just to catch that elusive shot. Light is the reason why a photog will make a trip to Ubin 200 times just to take a photo of mudskippers. It is the reason why a photographer will make 30-day hikes up to mountains over canyons and across rivers to take that one shot - and do so over the course of the year, in all weathers, all temperatures, all terrain.
this is getting to sound like hard work? you bet it is!
nobody said photography was easy.
why would anybody dive with a school of a hundred hammer-head sharks when death is near certainty if he/she made one mistake? why would anybody want to stalk a grizzly bear when it could tear you to shreds in seconds? for that matter, how could anybody stand working with spoilt, rude and unreasonable models who could easily tear your career to shreds with casual snite remarks about your photographic standards.
all for the sake of a keeper. heck, for the sake of a keeper, nothing is easy.
but enjoy everything you do. or don't do it at all.