John Jackson Miller said this quote

So he’d done more of the same. He’d drunk to forget. He’d brawled to let off steam. He’d taken the dangerous jobs to fund his lifestyle – and then began it all again. He wasn’t some chivalrous nomad, skulking from planet to planet doing good deeds and leaving when things got too hot. No, left when the bar-owner’s daughter suddenly wanted to marry him. Kanan didn’t leave because the Empire moved in: He’d stared down Imperials like Vidian before and lived. They knew he was something to ignore. No, he left because where the Empire went, fun usually died.