you said the solution
THE SOLUTION TO THIS:
when people get their sons married,they shud let both of them live separately for a few years minus any interference from their side.
let them grow together and develop a good bond.once they are well connected and adjusted fully with each other,they can return to live with inlaws,if reqd
"But here both of them live separately for a few years and thereafter they adjusted fully with each other,they can return to live with inlaws"
But this is not true many of them are separated and their i..e,wife cannot return to live with inlaws,just making quarrel to live separately.yes,their are few exceptions.
I saw many cases in which wife comes to court only for living separately and husband denied for that whether husband emotional and loved to their parents or the financial problem.In a case one wife lodged DV complain and she demand her husband to live separately and husband cannot afford the new premises i.e house.so,many problems are arises many of them takes a loan for building a house and the burden to pay the installments etc.
I know you understand but many after living separately they cannot return to live with inlaws---this is the fact --yes,their are few exceptions.