If someone wants to practice psychology, you need a doctorate to practice, but you don't need to go to school of medicine. I think there are many differences in every career and you should always ask yourself what is right for you. You should also take into consideration that school is an important part of this career path and you should dedicate yourself to studying even when you are no longer in school. It's a bit like a teacher in this regard, you also need to read medical journals and school magazines in order to keep up to date with procedures and teaching.