Jacob was in tents, and Esau of the field. Abraham and Isaac dwelt in tents because nothing in this world was their inheritance. Living in Tents symbolizes that this world is not our home. Abraham, with Isaac and Jacob, lived in tents. We have no permanent dwelling here.
Dust returns to dust.
Adam meant to ascend not be buried. Birthright would cause him to ascend, if he held onto it. But lost the birthright. Adam went back to where he came from. Like Abraham going out and returning to Ur and to idolatry after God called him out.