You said a mouth full there, I dont see the quality in work from others as it was when I first started out in the 80's.
I started out as a welder and I always looked over my work before an inspector seen it.
Nowaday's it seem's alot of or most people choose to let the inspector find what he can, and deal with it at that time.
I see things everday during inspections that I know that the person ( s ) who produced the work without a doubt seen what I see.
While I have stated before that I am not a great welder, when I weld something it is supposed to be right. I work for Myself and for a friend building/reparing things for people I know and will see many times in the future. I don't feel bad about charging what it is worth, but if that part/repair fails due to poor workmanship on My part I can't charge to fix it. I do things as best I can with the intent that I do them once.