I believe religion was created by people who didn't have science to explain natural phenomenon. I remember also hearing somewhere that humans often have a tendency to assign agency to things when they don't have an explanation because it was a survival mechanism.
For example, let's say you're walking alone in the woods at night and you hear a tree branch snap. Most humans are more likely to think a predator was what caused said tree branch to snap rather than the idea that it snapped on its own. We evolved this trait to become hypervigilant like this as a survival mechanism. If you're right that a predator was what caused the tree branch to snap, it makes you more likely to protect yourself and get to safety. I've seen people theorize that this trait we've evolved may have contributed greatly to religion forming, we basically assigned agency to natural occurring causes. Why is it flooding? Because a god is angry at us. Again, that's a theory.
I also can acknowledge that for many people, religion gives them a sense of purpose, meaning, and community.
I can accept and get behind that, however, my personal feelings around organized religion is very biased and filled with personal anger and trauma. I have a lot of personal horror stories with the church that I don't feel comfortable sharing publicly. All I'll say is that I've learned the hard way that the church can be very abusive.
I also just don't agree or relate to the values said by Abrahamic religions specifically. I don't agree with them on a lot of things. Their values and what they deem as immoral are so different from how I personally view the world. Plus, I have a bit of a "rebellious" streak in me. I don't like being ordered around and told what to do, especially if what I'm being told to do goes against my values.
So basically, I don't have a problem with religion in and of itself and can accept if someone wants to follow it in their personal life, but for me, I don't want it forced on me or shoved down my throat. I don't want to be proselytized. Too much of what I know about history and science makes me feel like I don't need religion in my life. My values don't always necessarily align with what scripture says. And I am disgusted by all the atrocities that have been committed by religious officials, and atrocities that have been done in the name of religion.