Illustrations by Grace McKenna Choosing a seat when buying theatre tickets can become a deliberation that lasts many hours. Do I splash out for the front row of the dress circle and guarantee a good view? Do I save money and sit in the gods, knowing I’ll at least be able to hear the show wherever I am? Or do I want to be at the front row of the stalls, almost on the performers’ laps? I have spent hours scrolling through aviewfrommyseat.com  trying to make up my mind while squ