Socrates famously said that the unconsidered life is not worth living. He meant that a life lived without forethought or principle is a life so vulnerable to chance, and so dependent on the choices and actions of others, that it is of little real value to the person living it. He further meant that a life well lived is one which has goals, and integrity, which is chosen and directed by the one who lives it, to the fullest extent possible to a human agent caught in the webs of society and history.
People should be left to believe what they like, so long as they harm no one else. Apart from normal expectations of politeness, it is not however clear why people should require their personal beliefs to be treated with special sensitivity by others, to the point that if others fail to tip-toe respectfully around them they will start throwing bombs.
There is a beautiful and life-enhancing alternative outlook that offers insight, consolation, inspiration and meaning, which has nothing to do with religion, and everything to do with the best, most generous, most sympathetic understanding of human reality.
Behave in life as at a dinner party. Is anything brought around to you? Put out your hand and take your share with moderation. Does it pass by you?
Do not stop it. Is it not yet come? Do not stretch your desire towards it, but wait till it reaches you. Do this with regard to children, to a spouse, to public post, to riches, and you will eventually be a worthy guest at the feast of life.