We should consider that the process of choosing who to vote to has some other benefits (other than the small probability that your vote is the vote that changes the outcome)
Mostly, there are two things to do before voting:
1) decide your position on multiple issues
2) think about how much the implementation of the system allows your positions to be communicated/counted (so some positions become more important because the system will allow them to have an effect)
both of these actions can be beneficial (and much so).
1 means thinking about life in society
2 means thinking about effective ways of agregating knowledge and preferences in a society
you could think of the elections as a holiday celebrating the fact that we live in a society, and inviting to think about it