A lot of people ask why Appeasement was even considered and kept going for so long in the lead-up to WW2. Why it wasn't dismissed as obviously stupid from the start.
But it makes perfect sense when you consider that the political Leadership of Britain and France had lived through and often fought in the absolute worst War in human History up to that point, the scars of which were still being felt at home, and where thus absolutely DESPERATE to avoid a repeat of that at any and all cost...unfortunately, to the point of deluding themselves that peace was still achievable if they just gave Hitler one last thing, even though it was clear by then that he would never stop.