Dave Grohl has revealed he wants to stop touring every time he returns home from a long period on the road – but always changes his mind.The Foo Fighters frontman was talking to AC/DC‘s Brian Johnson for a new Sky Arts documentary when he opened up on the emotional toil of touring the world with the band.“It’s kind of a running joke with everyone in my life where, after I’ve been on the road for a year and a half, I come home from tour and say, ‘I’m never doing that again. That’s it.