I missed the thread in question but have had a look at it now.
I can see why anyone would want more courses, when you start out there does appear to be a bit of a shortage of them. Why do we have so few when old PC games such as Links had tons of the damn things?
One reason is the hundreds of thousands of photos it takes to create a course here, a very costly and time consuming exercise.
Another is that not every course will allow WGT to represent them, Augusta for instance apparently has a deal with EA and won't allow WGT to use their course.
However, as has been pointed out, while there may not be a massive choice of courses here, it takes a great deal of time and many rounds to get to know them all. I've been here nearly 6 years and am still hopeless on most of the courses introduced since, and including, Olympic. I just don't play them enough to learn the best way to play each hole, until I do it's always going to be a struggle to play them well.
Since you play so little I would think the courses we have will keep you occupied for a long time.
I'm trying to have a great day, I really am. Somehow it ain't quite kicking in for me though, hope it is for you : )