I've had my for 20 + years now and is still going strong.  I've had to replace many a chain and plugs but has been reliable when others have not.  I can't say I've been nice to it either having cut into different objects and tackling trees meant for larger machines.  Another friend I lost about 5 years ago was my first real good hunting knife.  It was one I found as a young guy on my second deer hunting trip on the Bruce Penisula with my Dad's hunt camp.  I had broken the very tip off when in a jam once, but it skinned out many a deer over the course of about 15 years.  The year I lost it, I was hunting a good sized creek area and checking on deer sign with my long time hunting buddy.  We searched high and low for it with no luck.  Coincidently, that year was one of the very few where I didn't get my buck.

Bearcat