The only reasons basically were that it was free (no one had took it), it cost only ~9€/year and there are many other Henri Hämäläinen's in Finland and one of those would have taken it some point for sure. So I decided to be an early bird.
I thought in the beginnign that it's bit egoistic to have your own url, but so what. At the end no one really cares. If having your own url connects you even to one more inspring individual, it was worth it.