I could tell you about all the soldiers, suffragettes, activists, and people who you are dishonouring by not voting ... but it seems that doesn't make a difference. People suffered and died so you could have the right to vote, the right to influence the world, the right to matter.
But you chose not to vote. You chose not to say anything, not to matter. You chose to stay silent.
Remember, all it takes for evil to triumph is for good men to do nothing. Hitler was democratically elected. Remember that.
And remember that the reason that you can still lead a good life without voting or telling your leaders what you think or what should happen is because other people voted. It's because people like me voted to make sure you still have those rights. Because some of us saw a problem and refused to stay quiet.