... and with GNU/Linux you also save yourself a lot of time and hassle
installing endless MS updates, patches, patches for the patches, security
updates and fixes. Plus you also save yourself installing separate office
apps (at a price of anything up to €600), updates for those office apps,
anti-virus, anti-virus updates, daily virus definition updates, malware
protection, firewall and security software, etc ...... and the list goes on
.....
All this extra software and the updates are, in almost all cases, essential
not optional, if you want to run a fully secure system that can access the
internet.
Although GNU/Linux does need updating, the updates are far smaller and fewer.
Plus the initial system install is more complete with everything you need.
GNU/Linux is also more secure, because there's 6-12 month release cycles for
most major distributions.
For these reasons, and those stated above by MagicBanana, I believe GNU/Linux
to be the superior choice by far.