All those who search for meaning in life somehow lend credibility to the existence of God. Here's why.

A scientific mind (who I assume likes to explain everything without involving God) would argue that the only essential parts in the life cycle of an organism are the ones that help it survive and propagate as a species. These basic functions are the usual eating, sleeping, taking a dump, reproducing, and protecting the young ones from danger. The only 'purpose' in their life should be their survival. Indeed, most of us believe this to be true for bacteria, ants, birds and lions. But when it comes to humans, well, then it becomes a different ball game.

If the science that applies to bacteria, ants, birds and lions applies to humans too, why should they bother about anything other than the basic survival functions? Why should humans search for meaning in life and not just be content with simply surviving the 60-odd years they're alive for? The fact that things like love, hate, pride, respect, honesty and jealousy - things which can only be felt and do not exactly relate to survival - exist, and sometimes become more important than survival itself, indicates that there's more to the human life form than the question of survival.

This is where I lose the plot. If human species is different from other life forms in terms of survival being the sole/central purpose of life, then who/what caused it to be this way? God?