How come we have to die?

Like I believe once we die, it's over. It's not fair that we've developed such intricate minds that can over-yze everything which inevitably we over yze death sometimes. It's like we're so aware of everything on earth as we've lived over 50 years average, disregarding any ailments or tragedies. It's like what's the point of building relationships and finding love when losing just that when we're on our death bed is what hurts the most. We grow to experience the bad but the good always prevails when we remind ourselves what we will be missing when we die! Geesh! Nature is a beautiful thing I don't wanna leave, ever! OH! I can't forget about laughing and hugging. Life sucks, but it's so good!