

Not having a tube allows the tire to flex more so it’s more compliant. It’s not that you’ll avoid punctures, but that they often seal themselves. Tubeless definitely isn’t necessary and probably isn’t super beneficial for most people but there are definite advantages for some uses.
Jpod. It’s such a good show that no one seems to remember. Not sure where you’d find it but it’s worth a watch (only one season because it’s based on a book)