It's unfortunate that a lot of the stuff that's made it 10 years is stuff I don't really like anymore.
For the stuff I do like:
-Whisperlite (aka SHOUTHEAVY)
-Coleman camp stove, 3 burner (Guide model)
-Cabelas Guide 6p Dome Tent
-Thermarest classics (from the 80s), kids still use it.
-Northface 550 down jacket (with lots of duck tape patches)
-Scarpa Charmoz boots, 10 yrs this year, relegated to just basalt talus chukar trips but still pretty longevity.
-Xtra tuff rain boots, I swear you can't wear them out. Not possible.
-Pataguch fleece jacket, warm and still looks good
I think the rest of my decent equip is all between 5-10 yrs. All my backpacking gear is being slowly replaced with lighter versions.