No. People can still think logically and hav faith. There are plenty of religious scientists. You just can't let your faith get in the way of your logic. People should not fear knowledge.
No, because one can not prove a negative one can not disprove god, seeing as we have no idea on how the universe and life where created he a some what viable idea.
Also the sheer fact that religion hsa nothing to do with ones intellect would argue ageist that all who believe in god are illogical