(BTW, what is bad about teetotaling for a drug dealer? "Don't get high on your own supply" has allegedly been a credo for them since basically forever)
People divorce cus they “fall out of love” and, since society today puts self-interest, especially if its related to sex, above all else, and the nuclear family is seen as worthless and “problematic”, people ignore any evidence against their politically correct sheepish opinions.
On your second question, drug dealers often start dealing to support their habit. Only in movies will you get that line. Y’all live such incredibly sheltered lives.
Stay together for the kids. Once they leave the nest, sleep with all the therapists you want. But to pretend like divorce is anything but cringe and pathetic is twice as cringe.
A divorced therapist is like a dentist with bad teeth or a tee-totaling drug-dealer. Can't trust any of 'em.