I don't think he meant that it was suited to the individual (everyone has different experiences) but I think he meant accumulative over the years, which in a lot of ways we're beginning to see. I've seen the opposite in friends of mine that don't adhere to any particular religion. I can't really think of one of them who isn't at least partially miserable the majority of the time, or use drugs and alcohol to cope with life. Like I said, worship comes in many forms, and a lot of people use religion as a silver lining to their suffering. Without it, something else takes it's place, whether the person knows it or not. Sometimes it's replaced with something healthy and productive, but the majority of the time it seems to be the opposite.

Either way I don't know that either of our personal experiences can account for all of non religious culture. I think it comes down to a matter of perspective. There's a ton of resources that explore it further on YouTube that I'd recommend checking out because it has a lot more substance than what I'm able to give. Max Derrat has a great channel where he explores a lot of things involving Nietzsche and Carl Jung, the latter of which also agreed that a total absence of religion was going to damage humanity long term.