Life comes to an end. Everything comes to an end. There's nothing that doesn't stop. There's a beginning to life and there's an end to life. It's like the end of the line. The road can go no further.
People mourn through death, it's just a way to get through it. The grieving process can be difficult and different for each person. I wish death wasn't a part of it all. But that's life and that's just how everything will go for everyone. You can't get out of this life except through death.
Personally I can't wait to see what's on the other side. It would be an interesting thought if life just didn't end, don't get me wrong. I'm not sure exactly how that would happen, but if it were possible, I think it would be an interesting thing to take place. An afterlife without dying so to speak.