I think everyone can relate when I say that we’re all, to some extent, attracted to shiny things, not only as an instinct (could signal danger or be reminiscent of the sun’s rays), but also as an aesthetic. Think neon lights. Diamonds. Glitter. Christmas lights. Perhaps this ‘bling’ factor applies to aluminium foil, too, and makes it more appealing than it may seem. But even if aluminium foil wasn’t shiny, its usefulness would more than make up for it. Just don’t put it in the microwave!