You don't know Destiny if you never grinded public events for ascendant materials. You don't know Destiny if you never HAD TO ride your sparrow all around each planet picking up materials from nodes and chests. You don't know Destiny if you never bought or regretted not buying Gjallarhorn from Xûr before anyone knew what it would become. You don't know Destiny if you never went back to orbit after wiping in the Nightfall. You don't know Destiny if you never had to wait a week to get rewards from a heroic strike. You don't know Destiny if you don't hate/love Thorn. You don't know Destiny if you never had the Nightfall glow. There's more, of course, but it's late, and I'm tired.