content: My biggest annoyance with Windows 10 is that the OS will increase to filll the computer. It has absolutely no notion of proper memory management, or efficiency. Windows 10 also has a somewhat poor time in VM environments, which was surprising to see, since Windows 7 did just fine. It also has the issue, that a lot of features can not be turned off. The Windows 10 will download recommended apps which should be considered a massive security concern to most. If it can download recommended apps with no admin permissions, what else can Windows 10 download and install without the user's permission?