I'm not sure I'd know how to answer this question. Certainly I don't have any burning desire to go back and "re-do" songs in terms of striving for a better mix. I've listened to some things I've done not just more than any other individual (that's probably true of everything I've done) but more than everybody else combined. It's hard to ignore such a huge chunk of my own audience. When I've done what I set out to do, then I'm finished. Whether or not the "song" is finished, I'll leave to others to decide. Since I'm not really a "musician", for the most part if I've delivered a lyric I'm satisfied with, then that's "the song" and most everything else is in support of that. Another version of "the song" is fine with me, as long as someone else wants to do it.

However, I've written exactly ONE actual song-lyric in the past 8 years or more. It may be that my best lyrics are behind me. I haven't even tried in so long, I just don't know. But for the first time in my life, I feel like I am becoming a musician of a sort. I'm drawn to simple musical expressions that fall under the very broad category of "production music". These don't require lyrics/vocals and really don't even require strong, coherent melody/leads. I dabbled in this years ago with BIAB, and am still doing that kind of thing now in projects I've started since 2018. Mix and production are bigger parts of what I'm looking for with these efforts, so "quality" matters more in them than in a song where voice and words take the center.

If, however, by "quality" you mean the quality of the song...then while I'm sure I can still write a truly crappy song: 1. When I recognize its complete crappiness, I have zero desire to finish it. 2. Should I screw up and finish it, if I have failed to remove ALL crappiness, nobody will ever hear it. I don't write a lyric just so a song will have one. Partial crappiness is another issue, but I'll know when sharing pretty much where that crappiness is already, and I'll have a different motivation for sharing it.

BIAB 2021 Audiophile. Windows 10 64bit. Songwriter, lyricist, composer(?) loving all styles. Some pre-BIAB music from Farfetched Tangmo Band's first CD. https://alonetone.com/tangmo/playlists/close-to-the-ground