I never understand this ''they died for your freedom so you should use your vote or it's an insult to them''. If they died for our freedom, then that freedom allows us the right to vote or not - especially if many of us feel there is no one of outstanding quality to vote for.
Equally, no one went to the trenches so that MP's could rent out their 2nd home, claim expenses on their shopping, their travel and their trips abroad and every other way of ripping off the tax payer that they can think of (as long as it is ''within the rules'' of course) and feasting at the trough.
I will not vote out of a sense of duty (when I am able to) when the names of the candidates in front of me are not worthy of my vote.