For the most part, I'd be okay with it too... but a lot of EU member states already hate Germany for throwing it's weight around during things like migrant issues and dictating a lot of terms by virtue of contributions to the EU as a whole. More to the point, German banks are quite guilty of hiding money for Russian oligarchs (though not to the degree that say... Greece or Cyprus are). There's a very real conflict of interest with them having a lot of say in the EU's defense policy. I don't see some member states following through with their commitments if Germany gets to call the shots.True, but I personally feel safer with Germany protecting European interests than I do with the USA.
Even ignoring Trump's pro-Russian agenda, and with my personal disagreements with German foreign policy (e.g. Nuclear power, freezing Russian assets, way of dealing with multinationals like Amazon), I still think I'd much prefer German over American rule, because our worlds are just that different.