Maybe my Geography has gone to pot but isn't Europe a continent.......not a country....
Well, yes, but it is also a regional multi-national political entity with its own trademark registration system:
https://euipo.europa.eu/ohimportal/en
Apart from the system that Belgium shares with the Netherlands and Luxembourg:
https://www.boip.int/en/entrepreneurs/trademarks
So, in addition to "why", a relevant question is also "where".
Trademarks are not monopolies on a string of characters, however. So the other relevant question would be to register a trademark "for what goods or services?"
Whether something "makes sense" ultimately depends on what one is attempting to accomplish.
For example, I can ask "Does it make sense for me to get a kidney transplant?" In order to answer that question, there are probably a few things you'd want to know about me and my kidneys. Like, say, what sort of problems, if any, I've been having with the ones I already have, and how much kriek lambic I've been running through them while watching cyclocross from home instead of getting out to Oudenaarde this weekend past, due to the ban on spectators.