The same reason kids are first taught the Bohrian atom model. It is less clear and precise, but thereby also less complex.

"100 baskets of apples" is easier to hold in your head than "23 baskets of red, small-ish apples, 12 of large red, 6 of any size green...", but my no means does it permit a more clear view of the Truth.

Different usage of the word "clear".