I disagree, it's not rare in English, many style guides recommend the use of the Oxford or Serial Comma, & a lot of people have very strong opinions in favor of (or conversely, opposed to) the Serial Comma.
It's true that it's not required in English, but it is definitely not rare.
In German you only put a comma in front of "und (=and)" and "oder (=or)" when the "und" is connecting two complete sentences, but never in an enumeration.
Example: Ich brauche eine Gabel, einen Löffel und ein Messer. (=I need a fork, a spoon and a knife.) Ich werde am Montag neues Besteck kaufen, und abends kommt mein Freund zum Essen. (=On Monday I will buy new cutlery, and in the evening my friend comes over for dinner.)
As far as I understand it it is done like this in Norsk as well. Can somebody confirm or correct this?