I’m no stranger to finding myself in situations that make me question my life choices but sitting in the SSE Arena watching Dave Pearce play Dance Anthems and telling me to lift my arms in the air is a new one. I’ll admit I’d been surprised and sceptical on finding this was the support for the Pet Shop Boys’ Dreamland: The Greatest Hits Tour. I’m immediately proven wrong in my incredulity, however, by the middle-aged Kevin and Perry beside me, who are already joyously immersed in Faithless’s ‘Insomnia’ as I arrive, fisherman’s hats perched on their heads. Pet Shop Boys…