After all, I enjoy listening to Led Zep, Alanis Morissette, and Enigma, and read the novels of Lustbader and Roquelaure, all of which is very spiritual stuff, albeit a heterodox spirituality. If there is not such objective reasons, I suggest you admit that faith is a matter of personal faith, not subject to objective proof. If the commonalities of spiritual systems are unreliable, the differences don't matter . The universe doesn't need a maker for it to be. Spirits are not necessary for gestation .
Love is chemistry .
Life doesn't need a maker. Geology is understood, and punctuated equilibrium is the key. Hominid evolution is understood. No particular religious hero is unassailable. Religion has a history , but that does not necessarily mean a goal-oriented process is occuring.