Doc was single and in his early 20s on a team of hideous "role models." Harvey was (and remains) a ***** selfish prima donna *****, who got bad advice from his equally ***** selfish prima donna ***** agent.
deGrom is 30, married and has two little ones. I know that doesn't guarantee he won't dabble, but he has a helluva lot of incentive not to! He seems to have his head screwed on right.
(Man, what Doc could have become...)