I've had this machine for at least 5 years (using my recollection of when the friend who helped me load it into the car moved away from here). To date, no problems. I thought the disk drive would quit but it's not been a problem.
Biggest issue is ink wastage on power up. So, have to PLAN when I will be using it (silly to power it up for *one* page!)
I'd be more concerned that I won't be able to find ink/spares for it as time passes.
But, when/if that time comes, I would have no problem discarding it -- *if* I paid for it (many items come to me from friends wanting to upgrade their kit), I would have paid "surplus value": plastic $0 tin $0.01/pound PCB's $2/pound etc. The "supplies" being essentially free (plastic/ink having no recycle value)
I used to have an 860. Discarded it when I ran out of ink blocks (cuz I had the 8200 to take its place!).