Memes

One of the reasons, others include vengenance over Ukrainians throwing out his puppet from the government, insane conspiracy theories about Lenin creating the Ukrainian nation, etc.

Unlikely. There are and where good economic and political reasons for the war.

The blossoming democracy, freedom and wealth in Ukraine are dangerous to the stability of Russia. They show what could have been.

The annexation of crimes did bring ports to further Russia's imperial ambition. The agricultural land is of high quality and will secure Russia's role as a resource exporter after the phase out of fossils. You also need to keep in mind that siberia's agricultural output is severely at risk from climate change. Ukraine had impressive heavy industry. They took transit tolls for Russian gas which could be saved.