Others maintain that it was ghastly, but Hitler started it so needed to be answered in a language he understood. Unfortunately, records show that the first intentional area bombing of civilians in the Second World War took place at Monchengladbach on 11 May 1940 at Churchills orders (the day after he dramatically became prime minister), and four months before the Luftwaffe began its Blitz of British cities.
London was hurt. Coventry was wiped out. If the British had revenge on their minds it was Coventry that drove them. And besides revenge turning a city into an inferno in sight of the Red Army might have been thought a useful demonstration.
add photos of Minsk and Manila, to really bolster your point