Oh come on lighten up fellows! Empire, is, to me, like the weather of yesterday: there are things about it that could have worked better, it could have been less of many things, and more of other things, but ultimately, it happened. I view it with the same detachment as I might view an act of God, however much I regret some of its consequences.
Do I consider it to be a achievement? Absolutely! But not in a racial or racist sense, so much as an acknowledgement of the bravery, effort, foresight, ambition, technological nous, military prowess, diplomatic skill, adminstrative ability and downright gall it takes to build one of them things. Call me primitive, but I still think that when looked at in history, Empires remain the single most pulpable manifestations of a culture's success. Ironically, I'd say empires 'multi-culturalize' the world.
But on the other hand, in the process a great part of the native populations of the Americas was killed directly or indirectly, and the same thing happened in other parts of the world such as Australia and Oceania; European diseases were introduced to foreign countries, and exotic ones were brought to Europe; the evil of the slave trade was exploited and exacerbated; an inferiority complex was introduced in many foreign civilizations, with the effects still being felt in many parts of the world, breeding often justified ill-will towards the West; and violent rifts that survive to this day, were created between neighbouring nations as a result of imperial ‘divide and rule’ policy. No other event in history turned mankind upside-down so thoroughly as this period of European eruption and consequent century-long colonial rule and western hegemony.
Will I join this society? Depends on what its purpose is: because the Empire was an immense and impressive achievement, but I see no cause now to paint the town red (or paint the map red perhaps?) in celebration of something with such serious and genuine moral and current implications. I also think to make so light of the more serious side of empire is untoward. At the end of the day, Empires are about taking away the dignity of other peoples, deprecating their cultures, and generaly teating people solely as a means to an end. I don't accept it in commerce or politics, I don't accept it in Empire either.
That said, the British Empire was not at all universally evil, and it was in some ways, especially in its late and middle age, an "empire of good intentions". Let's see it as the brilliant curiosity of history that it is. Form a society by all means.