The drummer said that he is "not a rock 'n' roll animal" and, despite his many talents, is actually not very good at going wild.
"I'm absolutely rubbish at being a rock star", said Larry.
"I'm one of the worst rock stars I know. I love being at home with my kids."
When he is not promoting the band's albums or out on tour, Larry enjoys the quiet family life at his home in Clontarf, Dublin, with Ann, his partner of 30 years, and their three children, Aaron, Ava and Ezra.
Now, the rocker has swapped the stage for the movie set after making his acting debut in the new Irish film, Man on The Train, which opens tonight.
Larry (51) will be joined by his leading lady Kate O'Toole and director Mary McGuckian on the Irish Film Institute's red carpet for the opening night of the film.
And it is all go for the busy musician who revealed that the band -- now on the road for 36 years -- will release a new album by September.
They are hoping to follow this up with a second album soon after, while the movie career continues for Larry, who has signed up for a second film called A Thousand Times Good Night.
"We have been working for the last couple of years, mostly in Ireland, which has been great. We've been recording here for a long time," said Larry.
Man on The Train is a remake of the 2002 Patrice Leconte film of the same name, and novice actor Larry takes up the lead role alongside screen legend, Donald Sutherland.
It tells the story of two very different men, a teacher and a thief, who meet by chance and bond over their curiosity about each other's lives. The drama focuses on the unlikely week-long bromance between the retired poetry lecturer (Sutherland) and the drifter (Mullen).
Known as the man in the background who rarely takes the limelight, Larry says that he is still surprised at his lead role.
"It was a bit of a shock," he said, as he initially signed up for a bit part in the film.
But he says he was given advice by his long-time friend Bono, who has also ventured into the world of film over the years.