I've spoken to a number of people who've told me that they will be exercising their democratic right to not cast a vote in the upcoming election. I do not have a problem with you exercising your right, but just want to caution you.
The ANC needs more than 60% of the votes to enable them to change the constitution as they please. I say again, 60% of votes cast.
That means by you deciding to not cast a vote at all, you're making it easier for them to get that 60%.
If you've decided that there is no party with which you can agree on political views, at least do the rest of us one favour, pick a party that you feel has no hope in hell to win the election, and cast your vote for them.
At least that way you'll be expanding the pool of cast votes out of which the ANC needs 60%