Suppose you had a choice:
Option 1: you never had to experience a painful feeling ever again. That's never. BUT, it means that you lose all capacity to love and care. You care about nothing and no-one. Nothing will matter any more. No one matters. Life becomes meaningless because you don't care about anything whatsoever.
Option 2: You get to love and care. People matter to you. Life matters to you. You care about what you do, and what happens. You care about friends and family. You get to build loving relationships. Life becomes meaningful. And where there is a gap between what you want and what you've actually got, painful feelings show up.
Which option do you choose?