I miss the human connection with those around me who use windows. After years of using Linux almost exclusively, I now miss being able to relate to them. Sometimes I feel lonely because of it.
Colleagues get to resonate with all the windows slowness and reliability issues, and I can only stay silent.
"Hey, how can I do this obscure thing?" "Oh yes that's easy... err... no, I don't know." So many methods that are easy on Linux are basically impractical on windows. E.g. many text file processing tasks are doable swiftly with simple shell scripts or even bash one-liners; what will a windows user do? Telling them to automate something means suggesting them to create a new Java project. Opening an SSH session means using Mobaxterm which limits the number of sessions you can create.