Mac Crashing

I don't mean to sound like a mac basher but riddle me this:

Why is it that if a PC crashes people are more likely to switch to Mac, but if the Mac crashes people generally continue to use Mac. Furthermore, is it just me but when Macs crash, the owners tend to lose every little piece of data the computer had? I don't know about you, but in my years of using a PC, though I've had crashes I've never lost all my data. I'm sure it does happen, but I haven't heard of it too often. In the event of folks Ive heard switching from pc to mac, it's usually because it's "crappy" or it does indeed crash. Not in the complete meltdown crash but more of the "I can't run Word and internet at the same time" kind of crash. Not to say that all Macs crash, but I've heard enough testimony of friends (as well as Carrie Bradshaw on Sex and the City) having their macs crash and taking all of their data with them. Can you relate?