> Would you accept such nonsense from your plumber, or your dentist, or your electrician?

This would be a reasonable comparison if 90% of software developers could reliably produce bug-free code. This would be a (maybe less) reasonable comparison if 75% of software developers could reliably produce bug-free code. This would be a middling comparison if 50% of software developers could reliably produce bug-free code. This is a completely unreasonable comparison given that there have been 0 software developers ever, in the history of software, who have been able to reliably produce bug-free code. So yes, software development is orders of magnitude more difficult than plumbing, dentistry or electrician(-ing?). If you think it isn't, please feel free to jump in and prove all of us wrong.