My house is extremely well insulated (BER A2), dunno if it qualifies as a passivhouse.
Also I'm exporting more than a megawatt per year back to grid for free, so you (as a society) may be happy.
So, I don't think I'm being unethical.
Do you take into account the energy needed to grow and transport the food you eat? To extract the material needed for objects you own? To build your car? To maintain the roads you use? I guess you obviously don't use fossil fuels at all and instead rely exclusively on the clean energy you produce?
Because if you don't, then you are still overall a consumer of energy.
But even if you were a net producer of clean energy, we as a society have a big problem of consuming too much overall. We will have to reduce that at some point (whether we want it or not). So it would be great if people started thinking about not eating meat for every meal, taking a plane every second week-end, and living in a sauna.
Put on a jumper. Or even, let your body adjust. There's plenty of evidence that keeping your body working to stay warm when you are healthy is very good forblood sugar control, which has additional benefits.