Asklemmy

I guess a part is that science seems to meticulously avoid the question "why do we live", in a non-technical way, in a way that actually gives people a sense of meaning.

That and mental inertia, i.e. some things change very slowly.

Humans are tribalistic, like leaders who are assertive and charismatic, like simple answers, are easily swayed by emotions, fall victim to logical fallacies, and a plethora of other things that all work just fine if you're operating on a tribal level as we did for most of human history, or rather prehistory. Now that we are in a different phase of technological growth, which has brought with it massive social change, getting rid of all of that superstitious nonsense is very difficult because of aforementioned characteristics. What were beneficial as it tribal species, and arguably even after that, is now a liability. Or at least more of a hindrance to progress.

Because it's been the way it always has been, because people also hate change, are lazy, and tended to prefer both avoiding cognitive dissidents and minimizing effort to achieve desired results, getting rid of religion is a nightmare hassle. Even when the evidence is right there in front of them, people don't care. At least not enough of them. They'd rather listen to their authority figure, or do what all their friends are doing. Which if you're doing what all your friends are doing it just turns into a circle jerk. But since they're in that circle jerk, they tend to just stay in it, and because the people in it are their friends or family, they defend it because it's their tribe. We're kind of hardwired that way.

TLDR, people are dumb monkeys.

Because religion evolved to thrive in us.

It's like a parasite, and our mind is the host. It competes with other mind-parasites like other religions, or even scientific ideas. They compete for explanatory niches, for feeling relevant and important, and maybe most of all for attention.

Religions evolved traits which support their survival. Because all the other variants which didn't have these beneficial traits went extinct.

Like religions who have the idea of being super-important, and that it's necessary to spread your belief to others, are 'somehow' more spread out than religions who don't convey that need.

This thread is a nice collection of traits and techniques which religions have collected to support their survival.

This perspective is based on what Dawkins called memetics. It's funny that this idea is reciprocally just another mind-parasite, which attempted to replicate in this comment.

I can think of four possible reasons:-

• It works on my system - We are shaped by our experiences. To someone who had their life turned around by a religious order (or a religious individual), it would make sense to follow their teachings.

• Opium of the masses - Life is filled with suffering. It is nice to imagine that there is someone looking out for you. An afterlife free of suffering is even better.

• Just following orders - If you want to do something, but don't think your community will support you, it is easier if you say 'god told me to do it'. It might also make it easier to justify the action to yourself.

• Church of England - You don't care much either way, but it's too much of a hassle to leave. Plus meeting your friends and neighbours every week is fun.

Because they're convinced it's true. Given that billions of people in the world ( I strongly expect it's the majority) would claim to be religious - perhaps the better question is: "why does anyone not believe in religion?"

In vsauses video "The Future of Reason" he talks about how logic is a best seen in a group context, (a group consensus). So if a group of people agree on something, that is how it is. You can also put in some "if its not important to change the consensus for the group, don't change it" as to why belief in groups doesn't change very fast. Also the social and economic aspect, groups have people, people need people, you can also more easily find skilled people in a group.
(both religious and secular groups). Examples of belief, god cannot be observed directly, but religious people still believe : scientists can't find dark matter, but they still believe that it exists. The most important reason is that groups in general serve the people that are in them. Religions keep together well because the majority of people believe in the group consensus (e.g. god), and get to contribute and gain the benefits of the group. Universities are a good example aswell, as they provide employment, teach skills, and foster community and independence.

Because they have enough evidence to satisfy them that they should, if they're rational; because they were taught to and never questioned it through self-examination, if they're not.

Note that evidence is not the same as proof; other users have pointed out examples of evidence such as 'testimony from trusted authorities such as parents' and 'personal spiritual experiences' and since those answers were very detailed I won't repeat them here.