You must have had an incredibly old or corrupted Windows Laptop.
I've been running flash for years on my various ThinkPad Laptops, as have my fellow engineers at work and our laptops run cool, fast and stable. I haven't had a crash on a Windows laptop in over two years.
In fact the topic of flash never comes up. Our training videos are flash based, we run them for hours with no problems whatsoever.
In fact the only time flash came up was when Steve Jobs came out bitching and moaning and bad mouthing Adobe about it on his machines.
However I wasn't surprised as I have been an Apple enthusiast and user for years.
I understand that in AppleLand we are stuck with what Uncle Steve thinks is best for us, even when it's not.