While there may be a decrease in religiosity over the last few decades - a large part of the world still believes in some form of a god or gods. No use in insulting a large swath of society.
I don't believe God is in outer space, but I do believe He exists. There's plenty of practical evidence to support it too. It's getting old now, but Lee Strobel's "The Case for Christ" is a classic that does a good job at investigating a lot of this evidence.
if there would be any evidence, you wouldn't have to "believe". It would be fact.
But that isn't the case. On the contrary: given the state of the world the only logical conclusion is that there's only us. There's only humans dealing with other humans. That's it.
> if there would be any evidence, you wouldn't have to "believe". It would be fact.
No, “any evidence for X” does not imply “X is fact”.
That's why in the justice systems different degrees of evidence are needed for different consequences: if your rule was true, if there was any evidence for something, we could just jump to the most extreme consequence warranted given the assumption that the thing for which there was evidence was a certain fact. It would be “there's even the slightest evidence of guilt” -> “impose punishment”.
> if there would be any evidence, you wouldn't have to "believe". It would be fact.
A lot of people don't believe the world is round despite overwhelming evidence to the contrary. People come to different conclusions based on the same evidence all the time. (I'd prefer an example that doesn't imply that people with one belief are completely irrational, but that's the first one I came up with.)
To me, it's a lot harder to believe that God doesn't exist. Our beliefs are also shaped by our own experience and lots of intangible things.