There is no such thing as eternity. Our society is organized with cycles of 7 days. Every 7th day, there's a point where I arrive at work on Monday morning. So there are only 7 days, because there are only 7-day cycles, therefore there is no such thing as eternity, unless you're dead. Eternity only exists when you're dead. When you're dead, you don't make it to work on Monday morning.

I know why the Lord thinks you should keep living (always): because life is very happy and cheerful, and suffering is, in the eyes of the Lord, not that bad, because if a human thinks, or feels like it's something really bad, it's because this human's faith is insufficient and weak, because if his faith would not be weak, he would never feel like it's bad at the point that he wouldn't wanna live anymore, or at the point that he would lose the will to live.