ANGRY alternative rocker Kurt Cobain said his new family and the financial success of his band, Nirvana, had mellowed him out. He also said that musicians nowadays were generally unlike the rock 'n' roll wildmen, who inspired societal change, in the past. ''No one can deny the security of having a family,'' said Cobain, whose wife, Courtney Love, had a baby last September. ''It made me realise that I don't have just one area of interest in my life. I don't simply live for music anymore. I have a family . . . and just having the security and the feeling of knowing that you have a couple of people that are stuck with you.'' As for any political power rockers might wield, Cobain said: ''It's also kind of a sad thought in the way that rock 'n' roll musicians are taken so seriously. There are no Abbie Hoffmans in this generation, so people are looking for Abbie Hoffmans who play guitar.'' Nirvana's new album In Utero was released in the US this week.