Noise. It's something that was present in film since the inception of photography. And even the first few generations of digital cameras had quite a problem with noise. But nowadays many of the higher end cameras, and even some of mid-range cameras, have ferreted out noise from most of the commonly used ISO settings. And yet there's still a line of thought that when processing digital images we should make sure to blow up the image to 100% and use various software programs to remove every last trace of noise.
I was this person for the first few years of my photography. I must abolish all noise! But now I'm taking a different course. I've chosen to not only live with any noise that may be present in my images, but also sometimes use processing software to introduce more film-like noise into the image. I've embraced image noise as something that adds character and interest to the image. And besides, if the image is captivating enough then no one except the most diehard critic will be mentioning the subject.
Why not give it a try next time you're post processing images. Skip the noise removal. Or at least don't use a heavy hand. See if you can live with, and love, the result. I know I do.