I have a BMW Rally Pro 2 suit that has 100K miles on it and is 10 years old. It's been in the closet for the past 7 years as I stopped riding and just got back into it.
Besides a bit of fading it is still in excellent shape. Seams are good, armor is flexible and not ripped etc... Even the Gore-tex is waterproof. How long is the life expectancy of good gear???