Voting by mail, as we have in Washington and Oregon, makes it so easy to vote. And, now we don't even need a stamp on our ballots. I don't know that any system is perfect, but one really has no excuse to not vote and to vote accurately when they have plenty of time and can do it from the comfort of their home.
Voting by mail is an abomination that goes entirely against the idea of a secret ballot, allowing voter coercion, and sometimes even voting fraud. There is a reason most democracies don't do it.
We have loads of disenfranchised people, deliberately put in that spot by manipulative voter ID policies, along with report after report about security flaws in voting machines. Tell me again what’s wrong with voting by mail?