The Anthropic Principle
It's true that life as it exists on earth, and the behavior of the universe as a whole, is finely tuned. These constants, most physicists believe, were introduced at the time of the Big Bang, when the universe seems to have been created, or at least, to have begun again another cycle of creation.
If just a few of those fundamental constants of the universe had been even slightly different, then the current form of life would not have been possible and there would be none of our life forms--such as stocwach--who could point to those "finely-tuned" constants and argue that there must be a god.
Instead, there would be other fundamental constants and other life forms, and some of them would offering the same argument as stocwach's.
Pascal's Wager
Some Christians argue that people should believe in the God of the Bible, because they have nothing to lose but everything to gain if the Bible is wrong. So, why not play it safe and believe in God?
But, why play it safe with the Christian god? Using his logic, to be prudent, stocwach would have to believe in the doctrines of every Christian denomination, as well as those of every other religion. Stocwach is gambling that the god described in his bible is the one true god, while the Moslem is gambling that the one true god is the one described in the Koran. Both think they are playing it safe, but both of them couldn't be more wrong.
Why does stocwach not believe in the god of Islam, just to be safe, and believe in all of the other gods, as well? The answer is obvious: stocwach is gambling that his religion and his god are true, and the others false. He's betting that the ball on the roulette table will land on his number when his time is up. But, shouldn't he bet on all of the numbers, just to be safe?
The Power of Intercessory Prayer
Prayer works, but only if the one being prayed for thinks--or knows--he's being prayed for. The effect is well understood, and has nothing to do with the supernatural. If one believes that the praying will help, it helps one to relax; the blood pressure is lowered, and the body is somewhat better able to fight the infection. Some improvements in the rate of recovery are well documented.
It is not true that intercessory prayer works on those who don't know or suspect they're being prayed for, contrary to what true believers will say. The only studies which purport to show this are bogus. I refer interested readers to the following sites:
http://www.straightdope.com/mailbag/msciprayer.html
http://www.infidels.org/secular_web/feature/1998/prayer-USAToday.html
Joseph F. Alward
"Skeptical Views of Christianity and the Bible"