This idea that nobody on the internet is willing to pay for anything is outdated. Most people know that if it's not money, they're paying in data, time and/or attention. I much prefer paying with money, as do most people that use Proton, Kagi and other paid alternatives to free Google products.
Depends on altitude really. If you're higher up it's freezing meltwater, which might have a non-zero chance of containing disease carriers but it's probably extremely unlikely.
Yup, really wanted ANC ones for on the train and very happy with my €50 Edifiers. Sound fine and the ANC is good. Watched tons of reviews on XM5s and Bose QCs which only seem to offer meaningless improvements.
I do also own good cans and DAC for when I'm at home, but paying over €300 euros for something you'll only use in noisy environments and fussing over audio quality you won't be able to optimally enjoy anyways is silly.
The more I learn about nuclear the less it makes sense. It's a great source of energy but it's complex and expensive to maintain. Solar, wind, hydro and geothermal are simple and becoming cheaper by the day. It's hard to imagine a scenario in which we ever require more energy than those combined could provide.
Proton includes cloud storage and recently started supporting automatic backup of pictures on your phone.