“If we were living today like we did at 20, we would positively, undoubtedly be dead by now,” Robby Takac said when I asked the bassist and co-founding member of the Goo Goo Dolls about some of the changes he and band mate Johnny Rzeznik have experienced after more than three decades together.Takac’s matter-of-fact response was a refreshingly honest reaction to a question about some of the myths and realities of life in 2019 for the mega-successful rockers, as their July 30 concert at Darling’s Waterfront Pavilion in Bangor with co-headiners Train and soul-singing opener Allen Stone draws near