I don't read them because they tend to come in books of fine print. I never could read that tiny print, not even with my reading glasses.
Also I can usually figure out how to use the product without reading the instructions, and having had any instances of defect that I can recall that were a result of my not following directions.
The last time I did was with our espresso machine. It had a defect but it was because they sent us the wrong size for the part where you twist the espresso gadget on and off so it got stuck.
