Because of the interference of their twinkee breaks, GOP congressmen quit because of five-day work week.

From Thinkprogress:

Nine Republican congressmen have so far announced that they will not be running for re-election. One of those lawmakers, Rep. Ray LaHood (R-IL), complained “that the Democrats’ new five-day workweek” is part of the reason they’re all retiring:

“I do think the schedule and the flying is a huge pain for people, particularly those who are from the Midwest or even further West,” he said, adding that it’s “probably the worst part of the job.”

“I think that has played into these retirement announcements,” said the seven-term congressman from Peoria.
In Dec. 2006, Rep. Jack Kingston (R-GA) also griped about having to work five days each week, stating,

“Marriages suffer. The Democrats could care less about families — that’s what this says.”