EU will still stand strong, but... as a regional power. I don't buy that we will decline totally; but we'll be like Indonesia or Nigeria. Strong regional powers, but no power projection.
Perhaps. I like living in the EU, I like its (current) values, so I would like this to be the case.
But the world changes, and that change leads to political pressure. Even putting aside any possible radical technological shift (AKA "the singularity"), in 50 years from now, the EU may exist as is, or have disintegrated, or may have properly unified into a single polity much as the USA is today — and if the latter, it's likely it will have a single army and engage in hard-power-projection the way the USA does.
