Naturally,

Before you read this one, do keep in mind what I said about being wrong in helpful ways. I really don't know Buddhism very much at all. As you see, that won't stop me from discussing it with a certain amount of pigheadedness. Criticism I can take, but no nitpicking. I will delete you.
Buddhism is the highest level of thought attainable by natural theology. If you look at the world around you and notice all the tragedy and pain and injustice; then give up on the world as a horrible place, to be left as soon as possible; then you are an existentialist and you gave up too early.
A Buddhist will look at the same world with some hope. Things are this way. Perhaps they are supposed to be this way. Everything happens for a reason. Must be Bad Karma. Keep trying the best you can. If things don't get better in this life, perhaps there will be another and you can try again.
So the source of hope is mostly conjecture. Maybe there is some Holy Spirit movement here, bringing about some of the hope. There's also quite a bit of static interfering with the signal.
More hope is available. Much more.
The only way to move beyond natural theology is by revelation. For this, there is no substitute for the Holy Spirit.