I pretty well agree with this. The question is whether 'emotional' is an accurate description of it. It's almost non rational rather than about emotion, but I feel things to be true/false and then as you say add in the reasons afterwards.
Possibly that's a better word to use. I'm not sure. I can reason that my life seems to work better with my interpretation of Islam and god in it, but it's possible that the metrics that I use would be different from the metrics someone else might use to judge "better" or "worse" and a lot of the metrics are of course qualitative rather than quantitative. About the only quantitative one I can think of, off the top of my head, is the significant increase in my bank account when I stopped drinking alcohol. I'm sure there must be others but can't think of it right now. On the other hand, if I hadn't stopped drinking alcohol and therefore hadn't had kids I would probably have networked more, especially with more senior people in the business, and got a lot more promotions in my investment banking job rather than switching to accountancy for a better work-life balance, and would be earning a much bigger salary than the my current more tax-efficient salary ...so maybe that's not a good metric to use.
Also there are different types of belief. I know what time the train is due to arrive, and based on my usage the likelihood of it arriving. But as to morality or beauty, I don't have that derived in the same way. Religion seems to start in the area of beauty/ugliness and then in the cases of some religions move into the area of trains in making objective claims to truth. I know you have had an ongoing discussion about what people mean when they use the term truth, and I agree that some religious people use it in an almost mystical sense rather than the objective idea that is more common, but it's difficult to see that AB is using it in a way that isn't a claim to objective truth. That said, how AB uses it is a discussion to be had with him, here I'm just using him as a possible example.
I agree that AB is making an objective claim - the existence of something. The only point I was trying to make was that when he used the word "true" it was in connection to his spiritual conviction based on subjective experience rather than objective evidence that souls or gods exist, as neither of those concepts are testable or, if I understand his opinion correctly, these concepts are not part of this material world but 'exist' in some other realm/ dimension that he also can't provide any evidence for. So 'exist' in relation to the supernatural doesn't seem to mean the same thing as when 'exist' is used in relation to the natural.
I am reminded of John 18:37-38
"You are a king, then!” said Pilate. Jesus answered, “You say that I am a king. In fact, the reason I was born and came into the world is to testify to the truth. Everyone on the side of truth listens to me.” “What is truth?” retorted Pilate. With this he went out again to the Jews gathered there and said, “I find no basis for a charge against him.”
I looked that up and yes I suppose the meaning I get from the way Jesus is described as using the word "truth" here is that it is not referring to something ascertainable by science. Jesus said his kingdom was not of this world.