It doesn't really matter whether we get married or live as singles, in both cases we are going to suffer. So, I'd prefer to dispense with burden of marriage and family and live my hell alone. As for the optimal age, I should say that it varies depending on people's conditions including education, money and a whole range of other factors like culture. I personally would go for something between 30 and 40 because at these ages people have totally matured and are less likely to fail in their matrimonial relationships. By and large it's good to marry someday, however with current economic situation we will be too busy to enjoy it.