Still, when compared to analog broadcast, (or very compressed digital) SD, a good VCR and a good tape produce quite a good image, it's not full broadcast quality, but good enough for me....
In the second hlaf of the 80's, I went with a S-VHS VCR that had Hi-Fi capability (20-20,000 Hz, with an excellent s/n ratio). You're correct, the picture can be "good enough". But regular VHS or even S-VHS is no where near the ability of analog broadcast. Not Even Close.
For starters, luminance resolution for analog broadcasts (when a comb filter is used) can extend to 5MHz or even higher. Luminance resolution with a VHS recorder tops out with a resolution around 1.5MHz, on a good day. Then add in all the shortcuts used to reduce the quality of the color to fit on the VHS tape format, and you have a very limited color spectrum.
It's a shame analog TV broadcasts have been phased out, if they weren't I'd suggest you view one on a high quality TV. I suspect you'd be surprised at what was capable with that system.