I'm an ex-mythic (heroic) raider world 200 or so. I only do LFR now. I stopped raiding in Highmaul due to how much I hated the specs I played in a raid environment.
LFR to me is what its intended to be - tour mode. I enjoy rolling in, seeing wtf happens to Xavius, Malfurion, Ursoc etc and rolling out. I don't care that the loot is useless to me, all I care about is seeing what happens.
All of my characters are 860 ilvl right now just from mythic0 - mythic3s, i'll probably never get a usable item from LFR
Oh and transmog. I do it for that too.