If all that you say is true and everyone is still living at home, then you have every right to be angry. I just don't believe you actually know how the others contribute. I say this because there are tons more other chores to do around the house besides yard work and walking the dog, and someone has to be doing these things too.
And if your older siblings aren't still living at home they have their own chores to do where they live which is far more than what you do.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.