Nice, I liked the blog post you've got too [0]. I forgot my other gripe with Google Forms is that there's probably lost conversions to subscribers because it leaves my own site.
I keep meaning to follow one of these guides to embedding a form and posting to Google Sheets but the Google Sheets API is confusing and everyone's guide for doing this has a different method.
I just need to spend the time on it...
[0] https://sheetmonkey.io/articles/how-to-submit-a-html-form-to...