What Will We Do??????

I know a lot of you probably think that your going to college and know exactly what you want to do but how likely is it. Everyone has big dreams think about your parents they probably wanted to be big timers and do great things but then reality set in and they had to give up their dreams and think about the future. Although this now raises another question what will you do in your future and are dreams important. A lot of kids go to college and have a major set in stone until they feel it will be too much, for example they go to college and want to become a doctor or work in the scientific and medical field and take biology, then they switch because biology is either too hard, too boring, or not what they expected. On college tours i have been told this (even though i went to one lol the majority of everyone there took biology and switched). At both my cousins colleges they have told me that people switch their majors due to a change in their interest. I thought that a change if interest is good but why change from something that you love to do such as a dancer trying to get a major in arts or dance then switching to criminal justice and to become a policewoman.....Whats the point of derailing your dreams.......answers I have gotten was It wont pay the bills. This truly says that people believe that you will not get by in this capitalist nation by chasing your dreams and its truly sad.