me too - for me Nadal has always been a legend to me.
YOu are right he would not give up that easily - but that too is true -sometime the injuries are fatal and they kick off the players off their career.
It's not just about giving up, you have to see how Federer is still trying to be able to play and win the GS especially Wimbledon because it is his favorite surface but that didn't happen because an injury forced him to retire because his body was no longer able to compete and maybe Nadal would be the same but retiring with such great achievement is something to be proud of.
But I guess his injury is not that worst compare to Federer or to Andy Murray, so with proper exercise, he could rehabilitate his body to still compete at least one GS in this calendar year and chase another title and get one ahead of Djokovic.
So we will see, I doubt that he will retire though, of course his name is in the discussion of the GOAT.
But so far, Djokovic is still far from retiring so he can still more GS from Nadal, but for sure Rafa has a target for this year's slam.