Earlier quoted context omitted.
> I also think that the Latin alphabet could be easily used for Japanese Writing Japanese entirely in Latin characters would be no different from writing it entirely in hiragana. Have you ever tried reading that way?
Kind of. In my first semester of japanese we worked in hiragana+spaces. Having read English language papers on Japanese linguistics, I can also say that reading the Latin is easy too.
The larger point being, Japanese isn't locked into using a logographic system - it already has two phonetic syllabaries that people could start using exclusively if there was some advantage to doing so.