If there is in fact no God, then why do we have feelings such as love, hate, desire, etc? Obviously from a purely scientifc standpoint, feelings are generated from a chemical reaction in our bodies... but why? If there is no loving God, then what's the point? Wouldn't we all just be a bunch of careless robots (some of us are, but that's beside the point lol). Even if humans evolved from a specials with a primal survial instinct, how do you explain the emotion attachment to family, and to other desires that we have? If there's no loving, spiritual, emotional God, there where does all of this come from?
Feelings motivate us to do things that promote genetic persistence in our environment. Same answer as above. The purpose of life is to persist. The meaning of life is the relationship life has with everything it can have a relationship with. The explanation is the same as my first answer. Adaptation
Man, I didn't see this thread before... ggazoo, if you keep at it, you will steal the role of 'most religious whackjob' of the forum from lightgigantic. Your mindnumbingly wierd conclusion that emotions are proof that god exists can be answered more simply under natural selection. Our recent ancestors may have favoured emotions like love because it was somehow beneficial to our survival. There are several hypothesis under the theory of natural selection to explain this. The one I find most convincing is that ancestors who developed this emotion resulted in partners staying together longer. This is of course beneficial because humans require a long rearing process, and if the parents stay together for a long period of time, this increases the likelihood of the child surviving and passing its surviving genes onto another generation. An extravagant intelligent god is not the best hypothesis to something that had simple beginnings. If evolution was false and biology as you see it today was fully formed from a sudden creation, then perhaps intelligent design could be more seriously considered. It never happened that way however.
Genes that ensure the survival not only of the individual who carries them, but the individuals that carry identical copies of them are preserved. We share 50% of our genes with our children and siblings, thus genes that lead to the emotion of love will tend to lead to the preservation of those children and siblings, and thus the genes they carry. Desire is easy to explain, hate ensures that threats to your survival or that of your loved ones will be dealt with harshly. This is how science explains it, the actual chemistry is complex and poorly understood, but the genes don't have to "know" about that.
Explain what, exactly? Genes don't code for love precisely like one single gene is a blueprint for an organ that generates love, but having certain genes in combination with others results in an organism that is capable of love, or capable of echolocation, or any other adaptation. It's all part of evolution.