I somewhat don't really understand the value of "long career" and why people are so in need of it.
Long career means more injuries, and more missed opportunities (such as pursuing education in a field that is not related to sport, quite commonly). If i had a child at elite level skating, i wouldnt want this kid to keep skating way into late 20s, and for this reason i cannot want it for my favourite skaters. I also think that it is pretty awkward when a skater stays for too long, and then ends up injustly propped based on reputation rather than actual skating. Pretty sure that while the skaters i love maybe won't keep skating for 10 years from now, but then there will be also other awesome skaters to cheer for.
Um, skaters with longer careers usually have had less serious injuries, or they'd have been forced to retire early? Of course if you skate for 10 years you'll accumulate more injuries over time, but that probably also means your body was well enough to skate for 10 years, as opposed to breaking down a few years in. Skaters also always have the option to retire for non-injury related reasons if they want to pursue education or whatever - skaters who skated for a long time chose to do so, either out of a love for skating or because they considered it to be their best life path at the time.
I appreciate skaters with long careers because although not all skaters develop maturity, skill, or a wonderful narrative over time, many of them do. I enjoy Yuzuru's spins now a lot more than early in his career. I love how Kaetlyn was encouraged to keep skating and eventually became an Olympic medalist and world champion. Patrick's Hallelujah is one of my favorite programs because to me it's a culmination of all his glory and struggles, laid out frankly and with a lot of love. I don't want Sui/Han to continue to accumulate more injuries but if Sui's legs would allow her to keep skating, I'd love to see what else those two can keep giving us. Their programs are pure art to my eyes and you can tell they'd love to keep producing and giving as well.