Why do Democrats gloat over the suicide of the United States?

Democrats do actually gloat when they inform us that by mid-century the U.S. will become a majority-minority nation.

This behavior is not due only to bald ignorance on the part of democrats, it's often just selfishness. Democrats believe more immigration will give them lasting voting power since immigrants will vote for their lavish (unfunded) government programs.

Most white democrat's seem ignorant of the reality that as the people change the culture changes, and the change from a white to a black, brown and beige culture could very likely ( and naturally) throw white democrats out of office simply because they are white.

The majority-minority nation would also probably recreate the constantly changing dictatorships (left or right) common in the nations they come from, just as the Anglo Saxon founders of the United States recreated an English ethos.

But many whites will object to these changes in the same way they objected to crime-ridden inner cities, they moved out, not because they are evil but because real human nature is naturally kin-centered and ethnocentric and social order is naturally created by living in homogeneous societies.

Wouldn't it be excellent if we could rationally arrive at an evenhanded ethnopluralism of ethnostates carved out of the constitutional separation of powers and states which already exist (supposedly), rather than having territorial and civil disruptions or wars between distinctly different people?

We will probably have loudmouth empire-minded fascists on the left or the right (Marxist or racial) calling for a police states before more sane constitutional ethnostates become a reality.

It seems that most Democrats and many Republicans can't see this coming, or they are so decadent  they don't care.