Germany and an environmental problem [View all]

I live in Munich. In Germany and many European countries when you move into a rented flat, apartment you get to install your own kitchen. This way the landlord doesn't have to worry about damages to cabinets or appliance failures.
However, we are moving, now into a flat we bought, but will only be able to use 50% of the cabinets we bought 4 years ago. The counter top goes as it is now too short and the sink and cooking surface is reversed. Landfill. The sink cabinet goes because the new one needs a corner unit because of plumbing issues.
I have to wonder how much yearly hits the landfill as people move who are renters. Sounds like a large negative environmental impact.