"It seems arrogant of you to think your religion is the right one when it only accounts for the beliefs of 33% of the world's population "

Christianity as a whole consists of around 33% of the world's population. Keep in mind that there are around 34,000 different Christian groups in the world.

http://www.religioustolerance.org/christ.htm

Who is a Christian? Many would say a Christian is anyone who calls himself or herself a Christian. Beliefs vary very videly between the various Christian groups.

If someone is religious and believes in G-D then they should wonder why the religions that are practiced today exist. If G-D didn't want them all to exist then they wouldn't exist. It is up to us to each choose which religion we should practice. Some would say that it is up to us to choose what religion is most appropriate for each of us. While the sum of those calling themselves Christian is around 1/3 of the world's population, it is divided among many groups with very different beliefs.

One should also keep in mind that Abraham was the only believer in monotheism in his time. Would you say that his belifs were wrong since they were different than that of the rest of the world?