For your daily computing, this should not matter at all.
Should you want/need to reinstall your system, though, you will no longer be able to "factory reset" straight from the BIOS/boot menu, requiring actual installation media that fits your machine instead.
This usually consists of
1) Windows 10 64-bit ISO, to burn onto a DVD OR create a bootable USB with
2) Specific drivers for your model
For a growing number of folks with more recent hardware, automatic updates seem to work just fine, but sometimes you lose functionality with standard/generic drivers. If you're running Win10 Home, I hear Windows Update can get somewhat obsessive with replacing drivers you need with drivers it thinks are more current, which might mess things up.
To be ready for the worst, feel free to search for "How to create Win 10 boot media" - techradar is fine - and follow the instructions to get your installation media done; store them in a safe place.