The '60s-set drama's creator briefly quit over the cable network's decision to hold back the fifth season until this year.
"I was not happy about it. I did not understand it," he told The Sunday Times.
"In the end, it turned out to be a great decision. Because Breaking Bad got to go on in the summer, when we were usually on, and they finally got the audience they deserved.
"So I can't argue with it. But that is what happened," Weiner concluded.
Mad Men returns to AMC in the US tonight (Sunday, March 25) and will air in the UK two days later (Tuesday, March 27) on Sky Atlantic.
> Mad Men: 10 Greatest Moments from Four Seasons
Watch a trailer for the new season of Mad Men below: