Let me confess, I consider myself very liberal, I myself would want my daughter to hold on a couple of more years to make her decision. When a man asks a woman out on a date the foremost physical attraction is the deciding factor. So is the case in an arranged marriage. However, in a love marriage timing is important.
People are able to spend more time together and get to know each other better.
Sometimes, it needs a lot more to be able to get under the skin. When two people are in love, they are at their best to impress the other person. Our society is structured that way we are expected to be polite in public. It takes a while between couples to shed the veil. Most of the time, even after going out for a few years, when we actually live together, we are in for surprises.