Assuming that [bold]if[/bold] God exists that He wants what is best for humanity, what would be the possible motive for "hiding"?
There's a big difference between "more powerful than humans" and "can do anything imaginable."
I think the idea of an omnipotent anything is kind of immature and naive. Sort of an arms-escalation of the imagination (my dad is bigger than your dad syndrome). If God exists, it is likely that He is not all powerful. If God exists and He wants what is best for all of humanity, it is likely that He isn't capable of "fixing everything" in one fell swoop (or it would have been done already). Also, if the track record is any indication, He's also been on vacation for the last 2000 years or so.
Maybe God is dead. Maybe there was a God that really wanted humans to thrive and be awesome and stuff. He did everything He could, maybe even some huge sacrifices we'll never know of... but whatever He did (if He did anything), He's already done it and for whatever reason He's incapable of doing anything more.
As people, we just need to step up our game. Acknowledge that we are not entitled to everything we lay eyes on... do our part to live in this world along with everyone else, and not just for ourselves. We need to stop relying on hope to fix us, and just shut-up and do it.