It is widely accepted that the legal age of marriage is in the early 20s. The general believe is actually supported by science, that humans, in terms of biology and psychology, are ready to get married as early as 21 years old. But, most of the time. The early 20s is not a perfect time for marriage, because at that age humans are still developing a mature mental ability to take rational decisions and still searching for self identity. Marriage is not only a matter of human connection between spouses, but also an economic and financial matter.
Most of people in their early 20s usually does not have mature financial management, whereas most of them are still naive about financial management and freshly graduated from university, then take their first job that is typically low wages. There is some research that shows majority of reasons for divorce are tied to economic reason. People that prematurely take marriage without proper financial planning and financial honesty, They always take a divorce as a solution because their spouse is not honest about their financial condition.
However, there are some arguments stating that as long as the couples reach puberty, they are accepted to take marriage. Even though their mental state levels are unstable to take a rational decision. These arguments are usually taken from underdeveloped regions where the social stigma is still held on older believes that are not supported by science. To reduce this social stigma, we need to educate people that marriage does not to be as early as puberty hit. Marriage needs a proper and mature state of biological, psychological and economical of the couples, so they can commit into more serious relationship and build a new healthy and wealthy family.