Since the beginning of recorded history, which is defined by the invention of writing by the Sumerians around 6,000 years ago, historians have cataloged over 3,700 supernatural beings, of which 2,870 can be considered “deities” or “gods”.
So when you talk about “god”, and “praying to him”, which one is it? Zeus? Hades? Jupiter? Mars? Odin? Thor? Krishna? Vishnu? Ra? If you say "Just God, I only believe in the one God", allow me to point out that you are nearly as atheistic as I am. I don't believe in 2,870 gods, and you don't believe in 2,869. (This includes Satan, BTW.)
Every one of those old religions died out - don't worry, yours is next. I eagerly await the day when people realize that religion is nothing more than a man-made construct conceived in our heads, used to control the masses, to console the saddened, and to help the ones who simply cannot understand the how of things work, well, to give them silly answers to believe in. Wizard's First Rule, indeed. http://is.gd/mbAsuY
Once you understand why YOU dismiss those other 2,869 “gods”, you'll understand why *I* dismiss yours.
Consider Sherlock's Atheist Wager:
It is better to dismiss gods and the afterlife and live a meaningful life grounded in corporal reality.
1. If a god does exist, it is virtually impossible to know which one of the thousands of gods happen to be the correct one; there, the odds of worshiping the wrong god are significantly high. Further, if the right god happens to be a jealous god, which is frequently reported to be the case, the worshiping the wrong god is just as dangerous as worshiping none.
2. There is insufficient evidence to support any of the thousands upon thousands of supernatural claims; therefore, the risk of squandering this life in the hope that one will get one will get another life is incredibly high.
You should go read http://whywontgodhealamputees.com/your-delusion.htm - maybe you'll understand “religion” a bit more after doing so.