If you look up failure rates for components, nearly all average around 5%, if that.
Puget systems posts a yearly "Most Reliable PC Hardware" article on their site with plenty of information on this.
Bad experiences are more likely to be posted about as opposed to satisfactory experiences.
I'm certainly not trying to diminish your personal experience, but I felt it'd be useful to clarify this, for anyone who is concerned about this stuff.
I understand that anything can break. I also understand that some companies take care of their customers when this happens and some do not. Asus does not.