My N36L is running Ubuntu server 16.04,with a couple of containers (Plex, Ubiquiti Controller) and is still going strong. Granted, I only started using it seriously about 3 years ago, but it's a little beast. I've upped the Ram to 4GB, and I had to add a pci nic, as the inboard one gave me issues, but still.
Colleague of mine mentioned yesterday that the Intel Nuc he bought for his mom, gave issues after 3 years. The fan failed. Apparently it is a common issue. Very disappointing, but given the price.