Hi Pasta Chef. It's a beautiful story but.....
Julian (amongst others) tells that when he visited John he was living like a recluse in his own room, Yoko sleeping elsewhere (like with her boyfriend) and a nanny was bringing up Sean. John was no bread-making house husband beloved of legend. He was a lone junkie without the support of his friends and family who he had abandoned and publicly humiliated.
He makes a record, which doesn't sell particuly well and is meet with critical disdain (rightly so) and then someone shoots him.