Well a bunch of us here use CAD and Cam a lot professionally and as a hobby. What may be lacking are the funds to actually investing in high end programs. Considering that Creo, Solidworks etc will set you back a few grand and Mastercam many grand, many choose to use fusion360 which is "OK" for basic stuff and 3D modeling but not great for draughting.

Did you have any specific questions on CAD/ CAM?