The Great Gatsby Tom
by F. Scott Fitzgerald

Being born into a family that is wealthy has made Tom a spoiled man. He hasn't really worked his entire life and instead spends his days in indulgence and ease. This is what motivates Tom; gratification. He has a shameless affair with Myrtle because it satisfies his needs. He flaunts their relationship in public because he does not concern himself with the consequences of his actions, he's never had to. This is also why he and Daisy escape in the end of the book. There was a situation they would have to face and they didn't want to (the death of Myrtle). So they ran to their money and fled the situation, leaving it to be dealt with by others. Tom will spend his whole life doing things like that because that is who he is: A careless man who won't be bothered by the suffering he causes.