This is good. Your body must heal from days of no rest, so much sleep is good to help with this.
Yes!
I think that we suffer for a purpose, but that the purpose is just one piece in the swell of it all. Purpose has no meaning but to the person facing it, but the meaning it has is significant. All pain has meaning. All death, all loss, all blood spilt. We remember, and then we feel more alive having survived it. Not a thing beyond death, but life is enough.