This one is for you to decide to keep WHS if Microsoft isn't patching it for W10.
However I have to ask if you ever tried restoring from WHS. I mean if I was to pull your W7's HDD out, pop in a blank HDD, would you be able to recover? I found no one able to restore from a HDD failure.
This is why I suggest you rethink your backup and restore systems.
I have Windows Home Server 2011 running on an HP Proliant Microserver. It works fine with Windows 7 and Windows XP, correctly backing up all the disks.
The connector installs successfully on my Windows 10 system, which runs on a 32-bit Acer Aspire 10 convertible. It detects the low space available on the Acer's "hard drives", and reports the status of all the systems on my network, but it gives errors when I try to back up any of the disks. The Acer's C-drive is formatted NTFS, so shouldn't present difficulty. But WHS2011 won't back it up.
This system disk is the only one I really care about backing up with WHS, as the D-drive is dedicated to OneDrive, so is stored in the cloud as well as being mirrored on a W7 machine that is being backed up successfully.
Has anyone got a hint of how to get a fully-functioning WHS connector running on 32-bit Windows 10?