"not illegal provided it is of her own free will"....Most of us know that we are deprived of our own free will when it comes to marriage...All the rights go into parents' hands...It will be a weak order if at all it will be implemented properly.... Well I think this kinds of law and all the laws which directly or indirectly connect to it or create an ambiguous picture of any order should have uniformity in every state....
The problem of early marriages arises when the parents are uneducated and poor....so government should work at the root level first...
The other point which I think is that the age of marrying for a boy and girl should be equal....Why does't anyone object to the current law? Make it 21 or something for both boys and girls....What is the funda of 18 for girls and 21 for boys?? What extra knowledge or insight a boy gets in those extra 3 years ?