Nirvana is a staple rock music and have certainly gained immortality. It’s so incredibly sad to think about how Nirvana met it’s demise and Kurt will never be forgotten, but you are very correct how the soul that they had is retained to this day in the works of Butch and Dave. They have brought much honor and their careers pay ever deserved homage to their dearly departed friend. Kurt may be gone, but the family that was built around Nirvana lives on! One randomly awesome fun fact about Dave Grohl is that he was born in the same hospital as I was in Warren Ohio!