I am a inpatient photographer. Last night, there was a brilliant red sunset lighting up half the sky. I went into the house, mounted my 16-35mmL, and back out to the front yard. By then, it was mostly gone. I took 4 or 5 shots a few seconds apart.
I admire those who wait and capture that right moment, but I never seem to make it.
Here are the examples, not processed or enhanced. you can see how fast that sunset goes away. less than 30 sec, and I missed about 2 minutes of it.
I'm surprised you would have any trouble shooting sunsets. A sunset is one of the most photographed subjects there is. I once had an exchange on a Photo magazine's website, with a photographer who judges photo contests...and had posted an article about how he was extremely tired of looking at sunset photos!
I don't think it takes that much patience, you just have to be ready to shoot a bit before sunset. Patience comes when you're standing out there without having applied deet, and you get bit by mosquitos! It happens to me, sometimes even when I apply a ton of it...
Here's a recent one I shot at 120mm in portrait mode with my Sigma 120-400 zoom lens and my 6D, on a monopod with IS switched off. I've done better sunset images than this (at various focal lengths from wide to telephoto, and with various cameras), but I still like this one. It needs a bit more tweaking but it basically looked like this to the naked eye. I kind of want it to look slightly more extreme...so far edited only in LR.
As you note, timing is the issue, and I'm too impatient to sit down and wait for that golden moment, usually the sky is too clear, and just the right amount of clouds really helps reflect those bright colors.
Sure, If I were determined to get the image, I could do it, but living on a small farm, there is always work to do, particularly in the morning and at sunset.
Even so, I just don't place a high priority on capturing the sunset.