Wouldn't Life Be Easier if We Could Just Base our Decisions on Surveys?

Surveys could make life simpler. Why don't we use them?
There are times when I get so sick and tired of marketers and politicians asking me to participate in polls and surveys.  They are constantly asking for my opinions but my opinions always seem to be in the minority.  What is the point?  Do businesses and politicians really make decisions on the basis of surveys?  That is just the scariest thought.