By "Leaving the British Empire intact" I didn't mean specifically the colonial Empire (which didn't dissolve until after WW2 anyway), rather I was considering the damage made on the polity as a whole, ie human losses, damage to the economy and so on. While far from an anglophile in any way, I consider the British as the least bad of the XIX century colonial Empires.
I'd say that de-colonisation would have happened anyway, if possibly a little later, but perhaps (without the communist revolutionary imptus) under more ordered forms, spawning more stable and mature countries as a result. It is by no means a foregone conclusion, I readily agree to that. However, avoiding the death of millions of Britons and the damage done to the British economy by the war is a very good thing in and of itself.
As for the Ottomans, I hold them to the same standard as AH and Germany and find them wanting. AH and Germany did not engage in genocide during the war as Turkey did. Therefore I have little sympathy for the Ottoman Empire.
This. Also, as an actual German it's my right and duty to want my country do better, especially if this prevents the Nazis.
"My country, right or wrong; if right, to be kept right; and if wrong, to be set right." - Carl Schurz