Ignorance can indeed be bliss. I know some dubs who happily trot along, believing everything they are told, not concerned about life because of their certainty of The Kingdom.
I was never quite like that . I had faith certainly but that brought its own problems. Congregation responsibilities weighed heavy, I had friction with the other elders . I was glad to leave all that. Today I could never be an elder , having to feign enthusiasm for their stupid videos and electric church practices.
So personally I am happier and more content since leaving. I don’t know the answers to mankind’s greatest problems but I’m not going to worry over it.