Once a theist friend (former atheist) said to me that being a theist made her happier. Honestly, it's a reason I can accept. It's not rational, it doesn't make sense, but at least she admitted it was unprovable.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you