I never understood why people used this service. I'm not a professional photographer but I care about image quality. Google's "high quality" option really means "16 Megapixels or less" which is lower quality than most modern cameras can capture, so by taking advantage of unlimited storage, you're sacrificing image quality.
I did a "deep dive" trying to compare my raw photos with what I had on google and I could spot nearly no difference even after zooming way in. The one difference was a 5MB vs 700KB file size though. I was actually quite impressed. But I think these were all 12MP photos.
