> We are too afraid of change and having to take responsibilities

It's unclear whether Europe can continue to exist with its current social guarantees without American security guarantees. It isn't a matter of subsidy. Just scale. Building a parallel security establishment will leave America and Europe poorer. But Europe's cost will be its welfare state.

Maybe, we will see. I'm doubtful we need to fully replace the US. I don't believe that we will actually see Russia do a ground invasion of the EU, so for example the massive militarization Germany is going for doesn't make too much sense IMHO. If things continue to go in that direction that will indeed be ruinous. What we need is more, better coordination and team work between the member countries