> Now I can incrementally update and improve and refactor

This is 100 times easier for me than building from scratch. I second guess everything when I start with a blank canvas.

That was my pain point and why I made my extension SnipCSS - https://chrome.google.com/webstore/detail/snipcss/hbdnoadcma...

Usually I can find something "good/close enough" to what I want on some website. I use my extension to rip off that design, start with that as a base, then iterate. Just made this tool the other day https://templates.snipcss.com/tools/free-no-conflict-css-too... using this as the start design: https://www.toptal.com/developers/json-formatter