I totally know what you mean about sketches being better. Why do I think it is? I think it might be because your brain can pick between a few different sizes amongst the shaky lines, and it evens it out to make it look the most appealing. But if there was one solid line, there's no room for interpretation, so if it's slightly off, you're gonna notice it more. I probably just made that entire thing up and that's not actually a thing. But it's how I interpret it. XD

Speedy is a great critique. c: