Here some Q/A you can have.
95% of the file are hosted on archive.org
Why ? It's free and offer decent speed in prety much all country.
For Analytics only, i don't do anything with the data.
I lived in a country where electricity is very expensive, it will be very expensive to host all file at my home or in a hosting provider.
plus i've a shitty 100/5 internet
Because i like money ? (It's maybe a penny a year :D)