[askvictor]

The toilet seat is typically cleaner (in terms of bacteria) than the office desk. Certainly aerosol contamination is a risk, but that can easily be solved with a protocol of leaving the lid closed. And that's all assuming that bacteria are outright bad; it's becoming more apparent that too little exposure to bacteria is dangerous as well (can lead to auto immune disorders). Obviously I'm not suggesting living in faeces, but a bit of pragmatism can make something like this not a problem at all.

And it's easy for a kitchen without a toilet attached to become disgustingly unsanitary.