Thanks for the detailed response. I think I do understand your point.

In my (limited) experience so far however I find myself remembering the words themselves, rather than work out their pronunciation from their constituent kanji. To me working from the pronunciations of the kanji themselves is like trying to pronounce 'cough' by fitting together pronunciations for 'c', 'ou', and 'gh' (all of which have several options interestingly enough).