I disagree with Scientology; however, those people who do not see this movie because of Tom Cruise's beliefs are either moronic or hypocritical. Tom Cruise is a very good actor regardless of the belief system that he espouses. While I have not seen this movie yet, I am sure that I will enjoy it when I do see it.
Also, from a rational and empirical view, his belief in Scientology is no different than a Christian belief in life after death. So, if you are a Christian, or of some other religious persuasion, and you do not watch this movie because of Mr. Cruise's beliefs, you are, indeed, being hypocritical.
Finally, I don't understand why people look to entertainers for their cultural, religious or political views. While they may be talented at acting or singing, acting and singing does not equate intelligence. Obviously, there is a small handful who have common sense; however, the vast majority of these people are completely ignorant.
Have a great day.