What's wrong with anonymous paper ballots, counted in public? Observable, testable, re-countable; the failure modes are well known and the technology adapts to a wide range of circumstances.
Nothing as long as every potential voter also has equal access to opportunities to vote.
The reality is that some people can walk up and vote while others have to wait hours to vote.
If we trust online systems to handle medical records, billions of financial transactions, and taxes it seems to me that we can create a system that allows easy online voting for every citizen without the artificial roadblocks we throw in place.
Of course, not everyone really wants easy and secure voting for all citizens.
moderates can't be bothered to go to the polls as consistently because they don't feel as strongly. I would vote in local elections if it was just a hyper link. as it is, my elderly and partisan relatives all know when and where voting is done and I never hear about it.