Indeed, back in high school and college I got involved in the GOP and it shocked me to find how "liberal" (or rather, libertarian) many young Republicans' views were on abortion, homosexuality, drug legalization, and the Religious Reich. I even knew one or two who were closeted atheists. Now whenever I have the misfortune of meeting these people 10-20 years later, I discover that most of them have gone even further to the right, complaining about same sex-marriage, partial birth abortion," and how difficult it is to be white conservative christian in the face of the "liberal agenda."
Some use the "9-11 changed everything" canard for their change in attitude. Although, I don't see how the destruction of the WTC would lead one to embrace Creationism and prayer in school like my former friends have. Others that getting married and crapping out a few whiny kids "changed their outlook on life." So besides leading to a lifetime of boring, sexless, ennui (barring the sweet release of death or divorce), getting saddled with a spouse and a pack of spoiled brats turns you into a raving right-wing bigot? Yeah, sign me up for that!
I, on the other hand, went from anti-gay/anti-abortion/anti-"liberal" arch-Catholic Republican (In fact, I used to sound JUST like Cicero.) to an atheist pro-abortion, pro-gay, independent. Go figure.
Anyway, I don't hold out much hope for the GOP becoming more reasonable anytime soon. Right now the party is in the hands of a bunch of Bible-humping jingoists who aren't in any danger of retiring or dying off in the near future. By the time the current crop of young Republicans replace them, they'll be brainwashed into the cult of modern conservatism and will be just as crotchety and narrow-minded as their predecessors.