I have spiffy quick machine.  It's old but nimble.  Suddenly my system is lagging.  Normally that happens when Windows wants to install updates.  I'm thinking it wants to install Windows 10.  So far it looks about 70/30 in favor of upgrading.  I discount those people who say, "Linux Linux Linux".  I don't go against the wind.  I only care if it eliminates resource hogging so I can Poser smoothly and to make sure ALL of my programs work properly.  I don't care about solitaire but losing my DVD player?  C'mon man!