The internet is a network of nodes, none of which are secure. The addition of commerce to that network brought in a profit motive, which will always find new ways to exploit the insecurity of the nodes, the routes, and the end users, for profit.
Most people seem to think that computers, the nodes of the internet, can't ever be made secure. I believe they're wrong, but still have to wait a decade or so before the basic design defect in most operating systems is corrected.
Most computers "on" the internet aren't fully privileged nodes, but rather second class citizens with "access" to "content", instead of being a fully functional computing peer. I'm not sure if this will ever be corrected.
Humans are always going to fall for scams, but that's not specific to the internet, so we can ignore that in the judgement of the nature of the internet. It speeds, and widens, communications between people, when done properly.
I think things will get better in the next few decades, if we don't fall victim to our knowledge of physics (nuclear weapons) or biology (gain of function research).
[Edit/Append] It's extremely important that we don't lose free access to general purpose computing, if we want to maintain our freedoms in general. With general purpose computing, you can build a sneakernet, or your own internet.