The Netherlands international said farewell to the Spanish giants after just two years at the Santiago Bernabeu and has since developed into a key player at the Allianz Arena.
Robben won the treble with Bayern last season and he has no regrets whatsoever over his move to Bavaria.
"Leaving Madrid for Bayern was the best decision of my life," the Dutchman told the official Bayern website.
The 30-year-old winger then went on to discuss the upcoming DFB-Pokal final against Borussia Dortmund and acknowledged that it will not be an easy game for Bayern.
"If we perform to our potential and play as a team we have it in us to win the cup," Robben reasoned. "It’s a very good season, and if we win the cup we can call it superb.
"But we know all about their quality. They’re a superb team, so we know what to expect. We’re playing a great team, and those are always the matches you look forward to."
The DFB-Pokal final is scheduled to take place in Berlin on May 17.