"It doesn’t seem logical or just to boycott good products—music included; Wagner is bound to come up—simply because they are German, were originated by Hitler, or were favored by him. Contemporary Germans—automakers and designers included—did not kill Jews. The majority of Germans did not kill Jews."

No, but should I enrich them after their ancestors enriched themselves by putting our forefathers in slave labor and absconding with their valuables?  There is nothing wrong with a healthly grudge.  The only question is how long it should last.