I bought the full disk version of X-Plane 10 when it came out. I felt it was important to support Austin Meyer's fight against the troll.
As a relative newcomer to FSX I'll easily admit that the user interface was a pain in the XXXX. But I found that of X-Plane 10 was a little more so (although some settings are MUCH easier to change).
Obviously, given time, I would have gotten used to it, so that isn't really a problem
What turned me off was the lack of airport buildings and vacant countrysides.
In FSX, many small unimportant airports at least have some buildings. An example would be the Hazleton, PA airport, KHZL.
X-Plane 10 A VERY lonely looking place.
FSX The airfield may not be all that accurate, but it does give you something to look at.
Google The FSX area around the airport is closer to the real airport.

I've brought this up on some X-Plane sites. The answers range from (in order);
There are lots and lots of free airports out there. Just download the ones you want.
There are lots of payware scenery out there. Just buy the areas that you want.
If you can't find freeware or payware for the airport that you want, just make it yourself.
And if you persist, or say "But FSX has that area covered right out of the box," You get @#^$$*$% ##$# @%$@% X#$^$ $#$!!!
I like to fly low & slow. An idea will pop into my head to fly around Madagascar, Halifax, or Palma de Mallorca. If I get the idea to fly around Sri Lanka all of a sudden, I don't want to try and find scenery for it on the internet, or make it on my own.
The point being that I don't just fly between the same 2 or 3 points.
So, yes. Your planes are GREAT. You scenery is very good. But not all of X-Plane is good enough for me.
Of course I would like the scenery to be real.
But in truth it only has to be believable. Vacant, doesn't cut it for me.
Every 3 or 4 months I start up X-Plane 10. I install any updates. I fly for a short while. I wait for another 3, 4, or 5 months.
But I keep seeing scenery like this in too many places.
