Life is easy to start because biology is dumb and selfish. Two cells collide, chemistry does its dumb little spark, and boom, consciousness gets dragged out without consent. The wires in your brain freak out at the idea of leaving no matter how much it hurts. Survival doesn't care about suffering. It just wants the body running.... no matter how you feel. Society piles on too because your exit scares them.... death is seen as taboo... death threatens control something our man made society feeds on.
We are all stuck conscious inside a system built to trap us, not comfort us. That's why it feels cruel....