Why do women get more emotional than men?

Gender. That is not a true statement and is a false belief. Now if you want to talk about the differences in how men and women express and experience their feelings and emotions then we may be able to make some generalities. But, also, as you age, you may also come to understand that the 'why' questions in life are often great topics for debate but there may not be any real or valid answer to 'why'.
Related to hormones. Male and female hormones affect brain development differently.This has been shown on the imaging studies.