One day you will die. That'll be it. No more seeing. No more touching. No more breathing. You will not think. You will not feel. You will not do anything anymore. That will be it. There will be no coming back and no going anywhere. You will be dead and you will remain dead.
You are alive now, but there will be a day in which you will die. The universe will not cease to exist just as it did not when your ancestors died or when any great person died, and it will not end with you. The universe will keep existing, but you will not be alive in it.