I'm deep into DIYS audio, but can find an end point which satisfies me, even for years. This includes a clean installation, usually looking done professional. No open wires, raw wood or unfinished boxes. The usual "this is just for a try, I do it nice when it works" is not my thing. It will never work... or look nice with such builders.
Every exposed DIYS object has to look well made for me. Which often resembles "pro", "studio" or "lab" gear, but no need for a piano style paint job in most cases.
For me some technical estetics are part of the game. I like nice, well done and perfectly performing wires, which may be better than needed. For example to connect a CD to a simple amp doesn't need my 5-7mm diameter, 100% shielded, 0.5mm strong core wire with the conductive carbon layer and silky surface. It is overkill on shielding and resistance, but looks nice and plugs in with the right feel. Some simpler cable and plugs would do. Anyway, since I heard what bad connections in worst case scenarios can do, I use such good, self made cables with nice plugs. Nothing expensive, just simple quality, like Neutrik, Rean, Sommer Cable etc. It may not be directly audible in such use, but it makes me feel better. If you have to bundle stuff behind some gear, analog and digital signals and mains connections, these wires show what they can do, simply in not acting up at all.
If I listen to something and my ears are telling me there is something wrong, I will try to find and erase this problem. May be it has something to do with my work on performance engines, where every unusual sound may be the begining of a potential failure.
On the other hand, there has to be a condition that is ready to race on an engine or worth listening in an audio system. If you don't reach this point, there is something wrong imo.
I have worked on my audio systems until they did sound right to me. My children playing real instruments give me a nice reset from time to time.
If my system is very close to a real guitar or drum kit and doesn't emit any hardware specific sounds, so to say "technical components", that is "my" personal level of acceptable quality. If the music sounds tormented and the speaker, amp or CD player get's audible, I get a problem with listening.
I can enjoy musik even on some Amazon Echo Dot when I'm outside doing work on the house, but when someone turns his phone loud until distortion is 50%, I get mad. I think the point were OK turns into not OK is a very personal thing.