What's the point of scattering ashes into the sea?

If you put the ashes in a box and accept the jealousy of your relatives, it is a bad behavior. Who has such qualifications? People must go back to where they came from. It is indeed a good choice to give the only thing left by the people who have struggled here all their lives to the broad-minded sea, and it is also the counterattack and protest of the deceased against secular superstition.