I've been agnostic since I was pretty young. I don't think my views where shaped by anyone in particular. I just liked the reasoning and stuck with it.
When it comes to finding meaning in my life, I think my current situation is fully disconnected from any theistic idea being able to save me. Even if I believed in a god, I'd want to know what my specific purpose is. What direction I'd like my life to go in. What career I'd like to choose.
Even worse, if I believed in a god, I might become biased towards certain ideas to such an extent, that I might defy my own identity and personality in service of a greater idea that I might not fully identify myself with. I'd be fearful of missing myself.
I personally enjoy the idea of nothing happening after you die. The existence of a void that one doesn't need to be afraid of, because they already came into contact with it before they were born. Very technically, that's a nonsensical statement of course, because you can't come into contact with anything if you don't exist, especially not nothingness. True nothingness is inconceivable to something that is more than nothing.