Rule of the thumb: everyone will not 'just' [1]
The majority is not a single person that will somehow behave like a rational being that will count their votes and vote only for "things that matter". People view very different things as "things that matter", and the system is easily gamed. Run a few popular, but pointless votes, exhaust available winning votes for the period, then try to pass a meaningful legislation. You will have riots form people who have spent their votes, but still want to vote for something truly important.
And that's before we start talking about whether people should directly vote on removing building code regulations for example. Or whether or not measles vaccines should be mandatory.
[1] https://www.tumblr.com/squareallworthy/163790039847/everyone...