Should unmarried couples cohabit before marriage?

Nowadays, cohabitation becomes more and more common. What factors stimulate unmarried people to choose cohabitation, according to some survey, I conclude some reasons. Cohabitational couples are afraid of unsuccessful marriage, so they cohabit for trying marriage or accustoming their partner’s life mode. Besides, the couples cohabit for convenience since they had work at different time, and they found it’s hard to date often. As a result, they lived together for saving the problem and saving money. I support the point of cohabitation, for many benefits for cohabitation surpass marriage immediately.
In my opinion, knowing a person well before marriage is a vital factor to have a successful marriage. Couples realize their partner before marriage better than after marriage. The divorce rate became higher and higher these days; cohabitation prevents the rate from higher and higher negatively.
Some people say that cohabitation couldn’t guarantee not to divorce, yet cohabitation at least is a better way to resolve the problem. They can know the other’s attitude toward life or defects that can’t easily find through date. If the partner has some habit or defects which couldn’t be tolerate, communication is quite important. If still not work, then breaking up is better than divorce.
Some people may say cohabitation hurts woman. Females have no assurance in law contrast to marriage, therefore, they oppose cohabitation. However, I considered this problem can be solving by not having children until married. And if male has act of violence, female can leave him instantly without constraint of marriage. Many examples show that wives tolerate domestic violence since she has children or has no economy independent. Cohabitation avoids the disadvantage of marriage.
Cohabitation has many benefits that can avoid some problems in marriage, through knowing a partner well, one can consider accept the person’s life style and defects or not.