My favorite is when you give a Christian evidence of any sort and they block you because they lack any counterargument. God is good? Here's a Bible passage about smashing babies on rocks. God hates prostitutes? Here's that part where Jesus washes women's feet with his hair. Nobody understands electricity? Then why don't you stick a key in an outlet? The eyeball is proof of creation? Here's a literal demonstration of how they have evolved multiple times from simple light-sensing cells. Blocked, blocked, blocked, yelled at then blocked.
I could go on all damned day, but you get the point. Blind faith is antithetical to logic, full stop. As far as I'm concerned, it's a psychological disorder, regardless of the object of said faith.
Oxygen is measurable. We can detect even tiny amounts of it, we know its makeup, we have well characterized its behavior, and we can make it work for us.
We have no evidence for the existence of any gods. Seems like we can exist without them just fine.
I realize I'm posting a complaint in my own thread so it's my own fault, but I keep getting "Love is Like Oxygen" by Sweet stuck in my head since I've posted this.
You don't even need oxygen to be in a liquid or solid state to see it: oxygen is the reason the sky is blue. When you look through a large enough volume of gaseous oxygen, as you do when you step outside in the day time, you can see it just fine.
Oxygen is absolutely measurable, and your own body will quickly tell you something is very, very wrong if your 02 intake is too low, or even weird (which is why SCUBA mixes are a topic of their own.)
There is the matter that oxygen does affect light, which allows us to tell if an exoplanet has oxygen in the atmosphere, which means it's not invisible, just very transparent. But when we look at other worlds we detect oxygen by analyzing the light that comes from them, so we see oxygen.
In the meantime, the human species as we know it (homo-sapiens) has been around for 250,000 years. The monotheistic version has been around for about 4,000 years (and even Adonai had others in His pantheon. The temple priests of Adonai murdered Asherah, His consort, by massacring all the Asheran desciples and burning Her temples down). For most of that time, ancestors, elemental spirits and animal spirits were central to our religious faith, not high-concept deities. For the vast majority of human existence, God did not exist as He is commonly regarded in popular religions.
In high school, there was a minor tradition of trolling the chemistry teacher during his talks about air. One student would say, “If I can’t see it, I don’t believe it.”
Of course the teacher would fall for it hook, line and sinker and the rest of the hour was spent arguing for air while the student would just repeat the same line again and again.
Good for me to remember that trolling and the resulting flame wars were around even before the internet. :-)