so many people here will find their faith in buddha

It is my understanding that Buddhahood is a state of becoming, a state of consciousness. Gautama becomes Buddha when he awakened. When Gautama became Buddha he had to face the problem of teaching what could not be taught.  He did not want his  followers to blindly accept his teaching but to experience them, find the truth. the path, for themselves.

Fear is to Courage as Doubt is to Faith.  The opposite of faith is not doubt but certainty.

 Buddhism finds meaning by ending suffering. Stoicism finds meaning by accepting suffering.

I don’t believe that is a accurate statement about Buddhism. For a Buddhist the question of meaning is unskillful, the notion of ‘finding meaning’ itself a source of suffering.  The question of meaning being pointless when you are the answer. Nirvana, the end of suffering, is a state that Transends the opposites/duality (measuring) and thus bliss. (end to measuring which we are really, really, really bad at)

no matter what you practice, we all believe we are here to promote the common good, through improving ourselves and leaving the world a better place

I would agree. The difficulty of course is the very notion/awareness of THE  ‘Good’ and ‘Better’. A Buddhist might say that it is in the defining, attaching, measuring and judging that we create suffering. How to avoid the trap of measuring (dualism – ego consciousness) and attachment and remain fully engaged with Life as it is.  How to avoid the ‘why bother?’ – or ‘suicide’ as Camus might say)  Thus the birth of all philosophy and wisdom traditions.

What is the point of prayer and meditation?

Old woman: To bring you closer to the Great Mystery.

So I can understand it?

Old: woman: No. So you can participate in it.

– Richard Wagamese