Fifth Year?

I am starting to consider a fifth year again because even though I know what I would like to do, I am uncertain if I truly want to move on in my life. For me I can't really see the point of fifth year because I would just take courses that I do not really need in order to go to university. The main reason I want to come back is because I don't want to say goodbye to WO and all of the things that I have been involved in during my high school career. One of the reasons I want to stay is because of a cause that is very important to me. This cause is the environment. Our school no longer has an environment club because of the environment committee. However this group really doesn't raise awareness about the importance of the environment and is mostly made up of people who want to be in SAC but not do a lot of work. I would really like to stay and help this committee become a recognizable committee for SAC and actually consist of people who, like me, are dedicated to preserving our planet.