Yes, I do believe in God. Even if you do not know which religion to choose from, pick the one that you will gain more from in life. This is believing in God.
There are three area's our beliefs could go through. One of them is not believing in God, and finding out he does not exists. People of Christianity are disappointed with the outcome but oh well.
Another area is not believing in a God, and finding out he is real. You will be dissappointed but your soul can burn for eternity.
The last area is believing in God and finding out he is real after death. You get into Heaven and your soul lives on, eventually your spirit will again inhabit a new earth.
So out of these three, the best plan seems to be believing in God. However, there are also more perks to being a Christian. Most people who believe in God are more healthy, take care of those around them, are very friendly, and are normally happy. Also they tend to live longer.