Stop hating on the cave and embrace it
Edit
Some of the comments are hilarious keep them coming :)
I have made a Loot Cave Clan!!! Join here:
http://www.bungie.net/en/Clan/Detail/371051
Invite your friends!
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#Destiny
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The thing is, I'm pretty convinced I get more valuable engrams playing the strikes. I usually get 4-5 blue engrams in addition to other valuables per strike, but the one time I watched and waited for engrams to drop by the cave, all I saw were green engrams.