Again, if someone retires and moves on it is one thing. If they are injured they shouldn't compete. But if top skaters believe any competition other than Worlds or the Olympics is beneath them, that is what I have a problem with. (Not that I believe that to be the case with YuNa, but if she continues to ONLY compete at Worlds until 2014 I would think so).
First, no one (not even Yu-Na) has any idea if Yu-Na will carry on till Sochi, and if so, what competitions other than the Olympics would she compete at. Would she compete at the GPs during the Olympic season? Just one? Both? Would she participate in the GPs during the penultimate season, 2012-2013?
The point of this thread is that Yu-Na is undecided on Worlds in 2012. All we know right now is that she is not participating in the GPs for the 2011-2012 season. She could compete at 2012 4CCs and/or Worlds. She could skip the rest of this season entirely. She could return for a full season next year.
I think it's premature to pass judgment on a skater competing in "only 5 competitions in an Olympic cycle" when, for all you know, Yu-Na could retire now and never return, which in your words is "one thing" that you wouldn't have a problem with.
In addition, the pressure that Yu-Na faces every time that she steps on the ice was insane even before she won the Olympics, where people expected her to set records every time, even on the GP. And one thing I appreciated about Yu-Na is that she did take her GP events seriously, and she trained hard for them, and did her best to debut new programs well. But when you set the standard that high, it becomes even more difficult to meet expectations the next time out. Competing is a lot easier when you're at the beginning you have nothing to lose and no one expects anything of you. When you're the Olympic champion, even competing on a GP becomes a big deal.
Should Yu-Na continue to compete, I'll simply be thankful that I get to see her skating in a competitive setting again. But she's done enough for the sport already that I don't see how her choices in the future, whether she competes fully, or on a limited schedule, or she retires, is disrespecting the sport. This is a young woman who dragged herself through serious injuries during the year she debuted on the senior Grand Prix in 2006-2007 to compete in both of her assigned GPs, qualified for the GPF, where she again skated in serious pain, and won. For six straight years, Yu-Na competed at two JGP events or two GP events, and qualified for the JGPF or the GPF every year (and won 4 out of those 6).
Yu-Na has talked about how she was in so much pain during the 2006-2007 season, and was surprised at how good the results were considering her condition. And she was again in serious pain for 2008 Worlds, where she managed to win the free skate and medal. That is an awful lot of pain to endure for the sake of this sport.
Even if Yu-Na chooses a path that is away from competitive ice, she can still help promote the sport of skating. For example, Yu-Na taking part in the Pyeongchang bid led her to meeting and inspiring young skaters in South Africa, one of whom was quite emotional as she talked about how unbelievable, how unreal it was to meet an Olympic champion.
http://www.youtube.com/watch?v=db-Jo1eln80&feature=player_detailpage#t=54s
Yu-Na Kim, giving back to her sport by inspiring younger skaters.