I don't trust the concept of electronic voting.

Sure, the voting software might be open source, great, that doesn't mean that the code is actually running on the voting system at the time of election.

With electronic voting it is increadibly easy to skew a result, you just change the code and make every vote for A be worth 1, and every vote for B be worth 0,7 or so, then take the number of votes missing from B and remove them from the total number of votes.

With paper ballots that is a big logistical challange.

Then we come to the point of voter secrecy, that is entirely impossible to accomplish while maintaining voter verification in an electronic voting system, both of these objectives are critical to a proper voting system, and but you can only do either one of them in sn electronic voting system.