Gaping hole in religion

Four any human understanding basic logic should be adopted.
Let alone humans, any life forms are located only on Earth.
Human beings are intelligent beings, who adopt Logic for their basic understanding.
There are various groups living on Earth, who believe different religions or variants of religions, there are finer and variations among each individual of a group, who practice a popular religion. There belief very in small amounts.
Take the case of afterlife, what will happen after we are dead. Different religions have different interpretations. Each are different from one another.
But logically only one interpretation has to be to true. Christians go to heaven, or god. Buddhist are reborn. Muslims go to Allah. Here again there are small variations along the same group. For example, adult senior males believe less than females of the same group, their religion. Some doubt whether there is after life.
So my argument is: logically only one action it's possible. So whatever the correct result is, after life, most of the believers(or may be all) on earth are wrong.
So, why should we believe a religion
?