Speaking as someone whose native language uses phonetic writing, it simply makes sense. You just write what you say. Yes, some people talk differently, and because the writing is phonetic you can easily capture that in writing and you have multiple spellings for the same word in the dictionary (some marked as regionalisms). And as pronunciation of certain words shifts in time, so does the spelling. When more and more people start writing the word as it sounds, instead of the “correct” spelling, the new version gets added to the dictionary.
Adopting IPA would be wrong because it would require that everyone talk exactly the same way.
It just means abandoning the idea of a “correct spelling”.
Speaking as someone whose native language uses phonetic writing, it simply makes sense. You just write what you say. Yes, some people talk differently, and because the writing is phonetic you can easily capture that in writing and you have multiple spellings for the same word in the dictionary (some marked as regionalisms). And as pronunciation of certain words shifts in time, so does the spelling. When more and more people start writing the word as it sounds, instead of the “correct” spelling, the new version gets added to the dictionary.