@@Leadfinger - I think once you're on the other side of the Win10 upgrade, you'll be amazed at just how much better it is. Windows has matured an order of magnitude since the good 'ol XP days. Stability is WAY better, especially for games (some odd problems like this Insurgency thing notwithstanding.) File History (you need a second drive for that, but SO worth it!) for automatic backup and file versioning is SO nice! And Hibernate mode to shut down, then recover to where you left off when you power back up is awesome!
It will be a bit of a shock going all that distance - XP all the way up to 10 - but at its core, it's still Windows so you really wont be lost. Personally, I absolutely LOVE the new Start Menu - it combines what everyone actually liked about the Win8 Start Screen with what everybody likes about the Win7 Start Menu. And it's nicely customizable.