Which is why there is a prevailing theory that the domestication of cats was a deliberate action on their behalf.
So, your domestic jaguars are trained to get a taste for human flesh, but not our human flesh? I've said it a dozen times already; it doesn't work that way. Before anyone else mentions wolves as a counter-argument, wolves have a social hierarchy which humans can supplant. Wolves do not attack pack-members and especially not pack-leaders. Jaguars have no such social structure, are solitary, and even in cases where they've been raised from birth it's dangerous to give them a taste of raw meat because they don't have the same dog-mentality to "not bite the hand that feeds them" (the same is true for domestic cats).
Jaguar happens to be hungry - it will eat the nearest source of meat it can find, and it's a damn shame if that happens to be you.
For the counterargument: What about foxes? To my understanding, they are not as social as wolves. And one Russian scientist essentially made "dogs" our of them after breeding the most docile specimens together for a few years.