JDM von Weinberg , May 06, 2011; 10:08 p.m.
The actuations count given in the specs is just an estimate, presumably based on testing. It is not a statement that the camera will self-destruct after it reaches that count. Even a shutter failure does not "completely destroy" a camera -- just have a new one put in and start over.
With that kind of profligate shooting, you'd better stay away from cheap cameras, they might not take that kind of use (and are not intended to, either).
Do you trade in your car after it goes out of warranty? Mechanical parts, unlike electronic will actually wear out, but who knows, your 5D Mkii may be like the old Mercedes that went for over 1,000,000 miles or some such.