Well, if you have no need for the new features then I guess all this is of fairly low priority to you. Some people like to use the alternate file systems provided, or need the NAT capabilities and so on... If you use your device just with "regular applications" launching platform, like you'd use a dumbphone like iPhone or Lumia, then you do not need these things. Upgrading to the new kernel does not change your "user experience" at all.