You can write a good story about anything. Slice of life stories are great. A peaceful zen character can be a main character. A hard working craftman could be a main character. A man or woman taking care of their sick partner or child and barely having time for anything else is a main character. The whole trend of using the term NPC is a very egotistical framing in the first place, but if you care you can be living any type of lifestyle and be a main character. Culture is very relative, people think they're the main character because they act like a dip shit on a live stream and people watch them. In a lot of cultures people like that would not be seen as enviable at all. Its all pretty arbitrary.