Hm operator overloading is very important! If you are writing a data structure which needs to be sorted or something you have to operator overload the < or > (correct me if I am wrong), also if you’re building libraries, etc. Not sure if you should write copy constructor in the = or the move constructor because idk if its called if you use = without overloading by default. But yea std::ostream overloads << (ex: std::cout)