Temple In a teleconference with reporters to plug the band's tour that hits Minneapolis on Thursday, the three brothers and one cousin reflected on their wilder, hairier early days and the more sobering responsibilities of new families and filling arenas in 2014. Just don't think they've gotten complacent. "It's easy to feel like what you're doing is a routine," said vocalist Caleb Followill. "But I think there's something inside us that drives us ... we come from a very competitive family. For me, every time I see a young band and I hear a song that I think is really good, there's a part of me that gets a little angry. It's like, 'S---, man. We should have written that song. "Mechanical Bull" '" Caleb, Nathan (drums), Jared (bass) and Matthew (guitar) Followill signed their first record deal a dozen years ago and quickly earned a cult following in the U.S. thanks to the foursome's freewheeling songs that drew from Strokes-style cool and Southern-rock stomp. The British mainstream embraced them on a wider scale, turning them into major stars abroad. The States caught up in 2008 when Kings of Leon scored a pair of massive hits with "Sex on Fire" and "Use Somebody." Two albums later, the band has yet to match the success of those singles, so attendance for their current U.S. arena tour will show if there's enough interest to keep them operating at this level. Here's what the guys had to say about making it in the music business and making babies in the real world.