Benignuman: Your OP is clever superficially, but it doesn’t stand up to scrutiny. The belief in science that we profess every day is different from belief in Torah that is demanded of us (at least in this generation). Belief in science is purely utilitarian. Sure, past performance is not inherently indicative of future results, but I am not proclaiming past performance as king. I am saying that this has worked in the past, and I choose to do it again because I think it will work again. The minute it doesn’t work, guess what happens? I adjust my “beliefs”.
When you talk about believing in the Torah, in contrast, there is no utilitarian explanation. You are inventing both the cause and the effect, and demanding that I believe them. But if someone doesn’t believe that Hashem told him to kiss the mezuzah, and ALSO doesn’t believe that if he kisses the mezuzah blessings will rain down on him from heaven, then he really has no excuse for kissing the mezuzah, unless he believes in a vacuum that the asserted facts are true.