I'd love to hear about your evidence towards the existence of God. I for one know that there is no evidence backed up by science, which means any "evidence" has not undergone the process from hypothesis to theory like pretty much everything in science, making it very dubious to say the least. I'd love to hear it, though, as there's a pretty big chance that I've heard it before (I've been in this kind of discussions quite a lot), in which case I might be able to debunk it.
I know it might seem like a win-win situation for you, but like I pointed out in my previous post, Religion tends to slow down science (increase of scientific knowledge and education causes an increase in atheism, many of the older scientific theories, whilst formed by Christians in a world where the bible was law, were against the will of the church, especially theories conflicting with the bible. It is also doubtful that these people, would they have lived today, would believe in God according to the bible, or any deity for that matter, considering their intellect. They would have not been baselessly arguing against the theory of evolution, that's for sure. I will however agree that the constant bickering between Evolutionists and Creationists has caused the theory of evolution to be more refined, albeit only a little, and a lot of people are very misinformed about the theory because of the Church). Stem cell research, for example, was not legal for religious reasons.
Religion also brings an extra form of discrimination, discrimination based on religion. I do not have to tell you what happened during Hilter's reign of Germany to people who resembled the every day German except for one little thing, their religion. No form of discrimination is justified whatsoever, though, I'm just saying this adds the possibility of. Some religions, at least in their extremest form, often encourage this sort of discrimination. Just look at how homophobic conservative America is.
Religion can also be used as a form of control, for example, the Pope still has a lot of power. This power is even used to tell Africans that they should not be using condoms, causing the Aids epidemic to still grow significantly. This is just not morally justified in any way.
Not only that, I personally would not be able to live my life knowing it is all one big lie to keep myself happy. The evidence against God (when you're at least not closing your mind for it) is pretty overwhelming. God has becoming more and more obscure over the years, from a solid entity living in the clouds to a vague description of the powers holding the universe together. The "omnipotence" of God is the only thing keeping science from disproving his existence. Because my friend Bob, who's sitting right next to me, cannot be seen, heard or touched. Good luck proving he does not exist.
I would also like to point out that going to heaven is a silly concept in itself. Every feature used to describe the human "soul" is located in the brain. We do not quite know how the brain works exactly, but we do know that removing certain bits and pieces of the human brain can change one's personality, behaviour, feelings, memories, everything. Ageing, drug abuse, brain diseases (Alzheimer for example) and so on also changes these. Then what would the soul still be? And even if this "soul" were to exist, it would not be your personality, your emotions, your memories. Therefore, it would not be you. So what's the point making sure something goes to heaven, when whatever you are will perish together with the decomposition of your brain. Be sure to counter this argument (when possible) with decent arguments, not with silly hypothesises with no evidence to back them up whatsoever. Because it's pretty simple to counter every argument when "no rules apply". I know there are usually a lot of senseless arguments used to counter this, and I don't feel like countering every single one of them, when simple logic can do that for you anyway.