And there were a lot of people who did just that. Apple made approximately 2 million dolars from sales of MacOS X in the first week of its release. What buyers got for their money was 2 OS's, operating systems, in one box, with an extra surprise. That last disk allows you build your own MacOS X programs. MacOS X has lived up to the promise of stability.
System crashes are extremely rare.
Some folks have reported uptimes, uninterrupted continuous use, of weeks. Thanks to OS X's improved virtual memory out of memory errors are history, as long as you have room left on the hard drive for virtual memory swap space. Crashing applications do not take down other apps, or the OS, thanks to pre emptive multi tasking. But, like all 1.0 releases, there is room for improvement. Transferring files via iDisk could hang in mid operation.