@Ana1234 - People grow mustaches for all kinds of reasons. I know my dad did it because he had a scar on his upper lip that he preferred to hide. And some people do it for those really extravagant mustache competitions they hold in Europe.
If you ever want to cheer yourself up then look up pictures of some of those entrants. They are supposed to be as creative as possible with their facial hair and they really go all out.