I agree. Belief in god doesn't make one irrational. We believe our wife or husband loves us even though love is not an action but an (edit) but highly biological, psychological, and physiological in nature that doesn't depend on the relationship one has with the other person just the response to external stimuli.
I heard it put like this
You’re Excited, Not Nervous. You Just Keep Telling Yourself That.
So! Repeat after me: You’re not nervous; you’re excited. You’re not nervous; you’re excited. You just keep telling yourself that until it works. I’m excited for you!
Regardless the external stimuli, how we think about our experience and our body reaction is natural just as the experience of love.
The belief in god, like belief in love, isn't irrational. It gives the same body response in that belief from people all over the world regardless their religion. How one is intuned with their body, mind, consciousness response depends on the practice but the physiological and psychological part is the same because we are all human.
It's not irrational because god is seen as an external stimuli, and if that stimuli, like love, helps a person feel better about life, I wouldnt knock it down. It becomes irrational when one believes in god for the sake of believing and nothing more. Personally, lack of evidence for god (and love) is besides the point.
For many people, belief in god is the cause of rational thinking. The problem isn't god, though, just how we use our feelings and interpretations for the betterment or "worsement" of people and their well-being. Their response can be irrational at times but their belief, not always.