Yeah, cloning can be quite useful at times. Because you never know what kind of offer is made (I do have a 4 IV shiny Jirachi, so it's not a super high priority).
But right now, the only things that could possibly interest me are shinies of Legendaries that I don't have shiny. Reshiram, Zekrom, Victini (still impossible), Xerneas, Yveltal, and... that's it.
I'm at the state in Pokemon games where there is basically nothing I can be offered that'll interest me. And I've been in this state for a WHILE.
Battle? Sure. But nowadays, I'm more interested in just creating gimmick teams rather than any "standard" teams. If you ever get bored of using "meta" teams and want a gimmicky all in, I have lots of teams to share. Heh.