Why do people always take science for being the truth?

People often uses science in arguments and there’s just no way to win that argument, ‘cause for them science is the truth. People say it’s been scientifically proved, therefore it is the truth. Like evolution, atoms, colors, why water boils at 100 degrees etc.
How can anyone really know the truth? Some people believe there’s a God, but people doubt that a lot more than they doubt science. Isn’t science just a way to name things, to put things into boxes? It could all be an illusion and we wouldn’t know, maybe it’s all a dream.
I think “truth” is such a weird word. How can anyone know if it exists? I’m not saying science isn’t correct, maybe it is the truth. Maybe there’s a God, maybe not. Isn’t it just about choosing what we want to believe? Maybe it’s all an illusion, maybe other people don’t exist, but I choose to believe the world is real and that you guys are real and that’s how I’m living my life.

Okay, that was kinda long. I don’t know if I make sense at all.