In fact, in many countries not voting does not contribute to maintaining the status quo, but contributes to strengthening extremist parties. The lower participation in the election, the higher chances for far right parties are, as their supporters will definitely vote. It may depend on the landscape of the political parties in various countries and also the electoral system, but in Germany with quite a number of different parties and proportional representation, it's certainly a bad idea not to vote if you want things to stay as they are.