For me, a two party system seems really odd too. The flipside though, is having like 18 parties that all represent something, which takes way more cooperation and finding middle ground. This might seem good on paper, but can sometimes lead to indecisiveness or an unwillingness to take unpopular decisions. In the long run, that might cause a country to slowly fall behind on various topics due to a lack of vision.
Source: I’m a Dutch guy who has seen this happen in it’s own country.