Why is the speed of light uniform?

Why is the speed of light uniform?
Why don't some photons travel faster than others?

Or am I retarded and they do?

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It's less the speed of light and more the speed light happens to travel at in a vacuum. Or the cosmic speed limit.
Anything that doesn't interract with the Higgs field moves at the speed of light.

>happens to
Why?

Because it does.
And that is the best answer anyone can give currently.

What kind of other things are there in our universe that "just are?"
I know this is a very broad question. I'm not looking for a comprehensive list, just some examples for the layman.

Why would you expect otherwise?

Jesus I hate people like you.

You hate the curious? You sound like you'd be fun to have coffee with.

Basically everything in physics.

We can barely even explain how 90% of the time.

lmgtfy.com/?q=universal constants

Light has no mass, so when it travels nothing is slowing it down. C is the fastest speed that exists in our observable universe (inb4 tachyons, fuck off), just like the North Pole is simply the farthest north point on the Earth by definition. If you think of the situation like a shape, c is just there and nothing speed-wise exists beyond it.