Mandatory voting fosters a culture where being an informed citizen is part of one's civic duty, but ballot spoiling should absolutely be built into the system.

Mandatory voting fosters a culture where being an informed citizen is part of one's civic duty, but ballot spoiling should absolutely be built into the system. If you force people to shoot up, you need to give people the ability to voice that they don't like any of the options presented, or that they just don't have an opinion.