Nope, your opinion doesn't bother me. I respect that. Some people look at anything - even if it makes the game harder, like rewarding 1/4 experience - as cheating. And in most game types, I agree. I myself haven't used it on anything other than Pokémon games (granted, most of my remaining library is 3DS games).
Good luck getting that Keldeo. If you do change your mind, I'm happy to clone my Lv.15 Keldeo from the promotion in October, right before B2/W2's release (it ended the day before release), and you can trade me junk for it because I literally have every Pokémon already; I came to learn I would never do that unless I was willing to accept clones, so started doing so. I haven't bothered to go to the delivery guy for my Lv.50 Keldeo yet. The very few I do get myself I am keeping; the original is never getting traded. I mean, this is the primary reason people clone; it's to get Events you might have missed. Anyone could also trade you a clone without telling you it's one, and you'd be none the wiser. But I respect your view.
What do you have against clones? It's kind of silly to expect someone to fully hand over an Event Keldeo like that without keeping it themselves. Heck, I've received Meloetta clones in trades and I don't mind it one bit, it's like having the original event. Nothing wrong with it for Nintendo events. Might be more of a concern for any other Pokémon, though.