Read the book!!
"Cider House" is a wonderful work of American literature--destined to go down in history. Many judge this work based solely on the movie. If you're one of them, you're wasting your time and intelligence. Michael Caine is precisely how I imagined Dr. Larch, and I'm thrilled he won Best Supporting Actor for the role.
To set some curiosity aside, Dr. Larch IS an ether addict.
He (Dr. Larch, a real M.D.,) wants to help women-he supports their right to choose, albeit there wasn't a right to "choose" in 1943. He knew there'd be consequences if he didn't provide those services--women would go off and resort to back-alley abortions, become septic and die. (Like the young girl found by the incinerator-she resorted to a common butcher, who said he was a doctor, because no real M.D.'s like Dr. Larch were known of or were forbidden by law to perform abortions and therefore, would have to suffer the consequences if caught.)
Homer knocked Candy up while Wally was away and went to St. Clouds to have the baby. (Not mentioned in the movie.)
Read the book....Michael Caine's portrayal is amazing, it truly is, but the novel itself is stupendous.