I like the desktop too - along with a decent surround system, sub-woofer and large screen monitor.
Windows 10 has much better software built-in for doing backups, including the operating system.
A machine with a solid state hard drive will boot up about 5x faster than a spinning disk. It's very desirable.
Most software does not fully use the i7 chip's hyperthreading structure. A few, such as Lightroom and Adobe's Photoshop might benefit. Having an i7 chip won't make any noticeable speed improvement unless your doing video editing or 3d rendering. For most purposes, an i5 chip is more than sufficient.
More about i5 vs i7A secondary external backup hard drive is necessary - AND it's a good idea to disconnect the drive when not in use. A serious infection will search out all drives up to and including "cloud" backup platforms.
I found getting used to Windows 10 to be very frustrating at first. However, I now wish that I had upgraded to Win 10 on the one machine that still uses Win 7 Pro.
Living in a house really is much nicer than living in a cave. Upgrade your machine - you'll get used to it. ;)