Writing for The Daily Mail, Burgess acknowledges he has upset the rugby community with his decision to return to South Sydney but could not go on pretending he had any affection for the 15-man game.
"I know I have disappointed some of the players and fans at Bath. I completely understand why they would feel that way. I am sorry for the fact that I’ve left a hole in that team," he wrote.
"But the way I explained it was that my heart just isn’t in it, and if my heart’s not in it then they won’t get the best performances from me.
"My decision to leave Bath and move back to Australia was for personal reasons, but it was also because I wanted to spend the rest of my career playing the game that’s in my heart.
"Rugby league is in my heart. I’m looking forward to getting back to Sydney, where I’ll be with my family and playing for the Rabbitohs alongside my brothers again."
Burgess is expected back in Australia on Wednesday morning.