Why doesn't the EU want Scotland in?

 The SNP made Scotland a third-world country

With Nicola Sturgeon at it's helm, the SNP turned Scotland into a state worse than many third-world countries; it will take a long time, and effort, to negate this stigma.

To take Scotlan back would mean the EU would be requried to take on a heavy financial burden, and as the EU is the bank for Germany, the last thing the Germans want is to have to pay out; the EU is there to aid a German financial recovery which is why countries are leaving, why should they finance another country?