because there is a goal from our exisiting . every one has period of time for living . and this life exacly is test for every person .everyone has has time and its his life . and the questions in this exam is what he doing and there is a question if any person pass it he will success by 50 % of ofe exam and its beliving in God & his messangers and the other 50 % is about doing the good deeds ! thats my openion in this life !what do u think ?