Counterpoint - PCs are special and unique by necessity. The vast majority of creatures in whatever world your DM runs do not engage in the adventuring lifestyle. Many are happy to live quiet lives settled in relative comfort and peace. When you create a character, one of the things you need to think about is the impetus that sets them apart from those other people that don’t delve into musty old tombs and dank caves looking for trouble - otherwise, as soon as the PC gets their hands on a sizable sum of gold, they don’t really have a reason not to split and live like a king with the fortune they’ve amassed. Additionally, characters with class levels are de facto exemplary, and the intro blurb on each class description that everyone skips over to get to the meat of character creation includes questions that probe why your character is interested in sticking their neck out.
That’s not to say that you, personally, can’t play Johnny Hayseed, the Human Fighter 1 who signed up to be in the army with all his buddies and has no distinguishing features, traits, or characteristics that set him apart from the average person, but as a good player who facilitates the story the rest of the group is trying to tell, you will need a reason to travel with these weirdos who are all strange and different, and that’s going to be the thing that sets your character apart.