Nuclear Power Plants in Germany were all very old, an enormous investment would have been necessary to keep nuclear power in the game. The switch was decided ~10 years before Fukushima to invest in renewables instead, but then overturned by a new (conservative) government to kill renewables. After Fukushima, that same government decided to end nuclear power again, but without doing much for renewables this time.

Because of Putin's Russia, Germany (and Europe as a whole) will become independent from Russian energy in only a few years. Russia will be absolutely powerless by 2030 and without a working economy.