Question

explain why people follow tradition.

Answer 1

Generally because tradition is a series of survival techniques proven to provide genetic success. The very presence of "tradition" - the accumulated wisdom of several generations - is proof that it works.

Answer 2

People can follow traditions for any number of reasons: because their parents did it, because they were taught to do it, because it is what their culture or community expects, or because they enjoy or understand the purpose or need for the tradition.