A mix of any subset of cultures is a net positive compared to isolation from "others". It's impossible to jump straight from isolation to one big happy family world-wide. A "subset" that you seem to consider worthy of criticism is a necessary step towards a better future.

And I do take offense when people insinuate that I am proud of anything but my very own accomplishments, because pride in something you had no part in (e.g. patriotism) is among the most moronic sentiments mankind ever came up with.