my dad keeps telling me to do useless things

So my dad keeps telling me to write blogs and play EIGHT songs on the piano. THIS IS SO ANNOYING! So you know what? I will tell you why playing the piano and guitar is BAD. common bad habit is to play most of the piece at the correct speed, but the difficult parts at a slower speed. This only confuses the brain and your muscle memory, so it’s important to try and find an average speed that you can play the whole piece at. 2. Playing too loud or too quiet. So you see, playing PIANO is bad and useless. Now lets start with the guitar. It’s Not Fun: Probably the main reason so many people quit guitar shortly after they begin is because they aren’t having fun. Perhaps they are getting discouraged, frustrated, or just finding practice to be grueling and uninteresting. Plus, when my cousins come to our house, my dad keeps making them play the guitar and do useless stuff. So that is why they don’t come to our houses often and don’t want to go on vacations with us. So hopefully this will stop, which I know will wont, and I will see you next time, BYE!