"why buy a wireless keyboard?"
If you've got children using your keyboard then a wireless one is a Godsend. Easier to get the various food crumbs out from between the keys. Just take it outside and brush it upsidedown with no need to unconnect. :-)
Amazon slashes Echo Dot price to just £24.99 to kick off Black Friday
Best Black Friday deals for designers and artists 2018
Mac mini 2018 review
Les meilleurs écouteurs et casques audio (2018)