If they gonna block the least Apple could do is continue security updates back to 10.6 Or maybe stick with the current scenario and keep 10.6 current with security updates. Give up on the lions and Mav and Yos. (I myself pre gave up on these 2 before even installing). Pretty sure they introduced a new IO stack with 10.9 which gave me all sorts of USB and PCI isues never seen in 10.8 or previous. Still affects 10.11 Anyway 10.6.8 is rock solid and sips the resources. It may have a tough time with HTML5 but if you need to browse the web just whip out your giant smart phone.