What, pray tell, are those benefits that are so obvious to you, and why should they only apply to photos of your lunch and not money? Most of the more "banal" uses of the Internet would still work fine with a tightly regulated system that required you to sign up for services with an ID and have every packet signed and tracked. The reality is that many in the US believe we had an insurrection attempt in January due to 8chan of all things. To me, sure: it is certainly "obvious" that the ability to have speech that isn't centrally controlled is a good thing... but I can't come up with a single argument for it that wouldn't also apply to being able to send money between two parties (and, notably, in the Western world we tend to purposefully conflate "speech" with the ability to transfer and lend resources, as without capital nothing can be accomplished).