Its also worth noting that random loot still has very high value to non-crafters and lower-level players. Crafting requires a very high investment in time, platinum, and turbine points. There is simply no way a low-level, first-life character is going to craft decent gear for himself.
Using Scraap's example: that Devotion +54 shard requires Divine Level 88. That's probably 2-4 million plat invested in crafting, plus 600 TP for ingredients bags(just TRY to craft without them, I dare you) and another 400-500TP for success boosters and experience potions.
Not everyone is willing to spend TP on crafting, and lower-level characters certainly don't have 4 million floating around to blow on an item they can buy on the AH for a few tens of thousands.
Not everyone WANTS to craft. For those of us that do, we want it to be worthwhile.
NOTE: yes I am aware you can buy ingredient bags on the AH, if you paid attention to my example I was taking the standpoint of a level 8 first-life character. I've never seen over a Large bag in the AH and never for under 250k, I use a Huge and a Gargantuin in my crafting exploits and still have a tough time getting by.