I would agree that Windows is very stable these days in terms of amount of crashes. Windows does still crash, but usually the crash can be limited to the application that caused or was effected by it, and that program can be terminated without any further effects on the running of the OS. In contrast, a lot of crashes on AmigaOS brings the entire system down with it and as such more reboots are required. Sometimes, even when a crash doesn't bring the OS down you still end up having to reboot because the program doesn't terminate and leaves it's window open on the desktop. Crashes which only effect the concerned application or task are MUCH less annoying than ones which cause a complete system failure, which is why you now notice more crashes on AmigaOS than you do Windows ;-)
As a system I don't like Windows very much. Because it's now pretty much a worldwide standard and it has lots of very good, modern software written for it I do end up using it a fair bit, but given the choice I'd use AmigaOS over Windows any day, which is why my Amiga remains my main machine and takes pride of place on my computer table

Brian