Some teachers are nice. Some teachers are not. Some of them buy you a present on your birthday and pat you on the head if you manage to play Middle C in tune. Some of them get you to do deranged things that they think are good for you, but in fact might be harmful. Like drinking bleach if you fluff a note while playing chromatic scales in contrary motion.
Whatever your piano teacher is like, it’s always nice to have an outlet to express yourself. I came across this blog post where an asian lady recounts some tales surrounding her piano teacher. Sounds like she got away lightly to me.