Michael Schumacher insists he has not regretted his final retirement from Formula 1 "for a single moment".At the end of a three-season comeback period that did not add to his record tally of 91 wins and seven titles, the 44-year-old returned to retirement at the end of 2012 as Mercedes replaced him with Lewis Hamilton.He told Bild newspaper, that he made the right call.DIFFERENT STORYSchumacher said: "If there had been at least the prospect of fighting for the World championship in 2012, then it might have been a different decision."But I'm very happy," he insisted, laughing that he is now a "private television commentator" on his couch during grands prix for his wife Corinna.After more than two decades in F1, Schumacher also revealed that "a few people from Mercedes and Ferrari keep me in the loop" with F1's behind-the-scenes goings-on."But it's not as though I'm interested in everything," he added, revealing that he has put on a couple of kilograms since stepping out of the cockpit.He did return for a F1 demonstration and drove his 2011 Mercedes F1 car at the fabled Nordschleife.Schumacher, now a Mercedes ambassador, revealed: "I do not think that was the last time I will sit in a Silver Arrows." Wheels24 reported earlier in 2013 that Schumi is enjoying the stable life, helping his wife breed horses. Stay with Wheels24 for the 2013 F1 season – fresh reports every day.