The thing about YuNa is that she could contribute just about as much to skating if she does decide to end her competitive career and turn pro. For one thing, she will still be setting precedents in Korea. For another, a skater with her prestige might be just the shot in the arm that pro skating needs right now. Her high profile might bring new viewers to televised pro programs, and even to a touring show. So if that's what she feels she wants to do, I would be just as pleased as I'd be if she remains competitive.
After all the pressure she's been under for the past four years, I certainly wouldn't blame her if she didn't want to step back on that competitive treadmill.