The former party animal can use maturity to outgrow his childish behavior and is MUCH more likely not to return to that former lifestyle. Additionally, the former party animal isn't nearly as likely as a so-called "ex-gay" man to infect a cherished daughter or niece with a horrible disease that is sure to kill.
~ Blue Jays ~
Well, they have tests for diseases, and one is quite susceptible to STD's including AIDs if you are a promiscuous heterosexual. Sometimes immaturity is the reason behind promiscuousness and/or immoral behavior, but not always. If anything, I would question the mores of someone who felt "party animal" behavior was just being "immature" or simply sowing wild oats before "growing up" as that implies an agreement with that sort of behavior being acceptable and/or excusable under certain circumstances.
Immaturity is exactly the ailment that gays have. None other.
Cure that, and they will move on.