I have really...I mean....REALLY...expensive hobbies....
Look at it this way, cheaper than collecting cars or yacht racing. Or are those your other hobbies?
Well, let me fill in a few holes. Here is my "other" hobby (still photography...just a much more complex form: astrophotography). My ideal rig would be:
10Micron GM2000HPS: $20,850
PlaneWave 20" CDK: $32,500
FLI Proline 16801 Mono CCD - 65mm, Grade 1: $27,000
Then you have all the various accessories....robotic filter wheels, robotic focusers, robotic field rotators, off-axis guiders, etc. To use all this equipment, you need to build an observatory for it (it is not portable.) That's anywhere from $30,000 to $50,000, and if you want it out under consistently dark, clear skies, you gotta buy the land for it, too!
Die-hard astrophotography is probably about as expensive as fixing up old muscle cars or yacht racing in the end.