I have turned down a few projects, but mostly because I was too busy to provide the service required or the client appeared to be sorely underfunded or lacked the knowledge to be a good client, both of which could lead to problems and a bad project.
For most of us, getting Sand Hills type land is a once in a lifetime type project, not a requirement to take a project on. So, more power to CC and TD for being able to have secured more than one of these type of projects.
As to the hobby aspects, I still doodle green designs, etc. nearly every night and day so its still fun for me, even if more and more of those doodles are more theoretical than in days past......