evolution hasn't caught up to our current environment
in man's environment 1000s of years ago, it would be advantageous to eat high sugar foods if you found them (they would have been rarer)
thus people who had the taste for them had an advantage over who had taste buds that thought they tasted bad
(in reality this adaption probably developed long before man was man(maybe even before mammals) but you understand what I mean)
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mreow!
spork for president - metroid composite