Even seen one of those fake astroturf lawns? Ever sat on one? You can tell that it's not real, and although real lawn is more work to maintain, it looks and feels better, in my opinion at least. Now imagine that instead of spending thousands of dollar on a turf that at least tries to look realistic, you're spending $5 at a petco for plastic ornaments (possibly with gaudy colors).
That's real vs fake in a nutshell in my eyes.