Agreed, but you have to bear in mind that the British Empire, France, Russia, the United States and Germany, Austria and Turkey, not to mention many smaller countries, were at war. Conscription existed in all of those countries in 1914 except for the USA and Great Britain. It was introduced in Great Britain in 1916, except for Ireland. If you were in the infantry, as most soldiers were, life was very unpleasant compared with the Flying Corps. Rats, lice, mud, cold, heat,flooded trenches, trench foot, poor food, artillery, poison gas, machine guns and rifle fire.
A couple of sorties a day in a BE2, a good dinner and a clean bed were quite a good deal by comparison. If you survived that is.