Jordan, what were you raised if you don’t mind the inquiry?
As to believing something that you believe has no evidence, that’s hardly the case. In fact, it was the evidence that lead me to belief as well as several other thinkers, philosophers, and scientists. There’s no point in listing the data or arguments here, as I’ve found it does little unless someone is truly interested, but there’s enough evidence to mount a compelling case. Plus, everyone believes in something even if that something is them. As David Foster Wallace put it in his This Is Water speech, “everybody worships something.”
In regards to your question about hearing voices, I’m sure you’re aware of an old joke: When you talk to God, we call it prayer, but when God talks to you, we call it schizophrenia. But that’s hardly the case. Estimates show that 1 in 10 people worldwide have heard a voice in prayer and that ranges from some of our greatest figures in society (like MLK, Jr. Would you contend he was mentally ill?). Plus, therapists and psychologists wouldn’t say hearing voices is a sign of mental illness. There has to be a pattern. People with schizophrenia who hear voices hear them frequently and the messages are overwhelmingly negative. The “voices” they hear can tell them to commit great atrocities or constantly tell them they’re worthless or stupid. People who say they hear from the divine report the opposite. They only rarely hear the voice and God talks back in a quiet voice they hear inside their minds, or through images that come to mind during prayer. The words they hear are very few or a short sentence whereas mentally ill people will hear entire paragraphs. Also the voices are completely different in what they say. The voice of the divine communicates love, peace, and reassurance they report.
Hope that answers your question!