Short answer, yes. Microsoft is all in on Windows 10 and UWP so it's your future if you're a PC user, sooner or later. But in the short term, it depends what you do with your PC and whether you're thinking about it for personal use or business. If it's business and you have custom apps, there may be compatibility issues so you'll want to verify. For personal use, upgrading is probably a no brainer, especially if you're a gamer.