And kayaks too.
Tow bar: Not sure what others do without them. Furniture shops lend out trailers for free so that you can take your new sofa with you back home. I recently transported the materials for building my new front deck on a trailer. I tend to rent a trailer for taking things to the landfill/recycling facilities especially when renovating my home (and Norwegians do a lot of home renovation..). When helping young people move a trailer is all it takes. Etc etc. I used a tow bar at least five times a year for misc errands. (Now I have a Model S and have to leech on neighbors)
I am not sure why this is different and how e.g. US or German or French culture would be digferent.. I guess the alternative is paying others for delivery/disposal, doing less handiwork oneself, and (in the case of US) buying pickup trucks that in no way will fit on Norwegian roads and parking lots.