Well... as reason itself is not a valid judge to choose which religion is the right one, this choice is purely a matter of belief, of "faith".
Reason and logic can not prove nor disprove the existence of God, for example. So nor religious nor atheists can use the reason or the logic to justify the "rightness" of its own choice, cause reason and logic does not prove anything in this case.
And the same goes to the believe that the science holds the "truth" about the universe. Science is based upon assumptions (axioms in math, postulates in physics, etc) that are assumed as being true, and from them, conclusions are drawn with the use of reason and logic. But the reason and logic can not be used to justify the truth of this assumptions, because they are just assumptions, and cannot be derived from anything more basic. Reason and logic are only relationships between things (propositions) assumed true.
And the fact that science supposedly "explains the observed world" does not logically imply that its assumptions are the only right ones, as there is no law that states that one event must have one and only one possible explanation that is "right". In fact, it does not even imply that the assumptions are valid at all. For example, the Ptolemaic epicicles explained very well the planets moviments (for the precision of that times, and even until as recently as the 16th century), even if its assumptions were wrong.
Also, the deep study of the science shows as it knows its own limitations.
The Godels theorem states that there is some propositions in math that CANT be proven true or false, no matter how much logic you use. So, there is a mathematical proof that are things that can NOT be proven or disproven mathematically. And the math is the most rigorous of the sciences... and if even math can not prove everything, why does the not-so-rigorous sciences should? Or how it could?
Thats why there are much scientists (including myself) that believes in other religions besides science. Science being called a "religion" only by the fact one needs to believe that its true, and not by the fact of science believing in supernatural entities or such.