There really is no average, usually at around 75K or so it's fairly safe to assume a standard damper is at the end of its useful life. Age is a factor as well. 10K is nothing. What brand were they?
===============================whats the average strut life?? i replaced the struts on my deville about 10k ago and now the car seems to be riding like my grady white
the car is always driven easy, i dont drive it like richard petty