Tiiba: Also, most religions define God as being supremely good; evidence against the existence of a supremely good god is evidence against those religions even though it’s consistent with some other religions almost no one believes in. To get from there to positive “I have good reason to believe there is no god of any sort” atheism requires further work, but if your only reason for believing in God in the first place was tied to a particular religion, and since observationally that’s true of the great majority of theists (which suggests, for agreement-theorem-ish reasons, that maybe all the best reasons for believing in God have that characteristic) it provides grounds for not positively believing in God any more.
Tiiba: Also, most religions define God as being supremely good; evidence against the existence of a supremely good god is evidence against those religions even though it’s consistent with some other religions almost no one believes in. To get from there to positive “I have good reason to believe there is no god of any sort” atheism requires further work, but if your only reason for believing in God in the first place was tied to a particular religion, and since observationally that’s true of the great majority of theists (which suggests, for agreement-theorem-ish reasons, that maybe all the best reasons for believing in God have that characteristic) it provides grounds for not positively believing in God any more.