A lot of voters will split their votes to prevent one party from having too much control. For example if hillary is going to win in a landslide they'll vote for

A lot of voters will split their votes to prevent one party from having too much control. For example if hillary is going to win in a landslide they'll vote for a republican congress. However aren't most things in life a total waste of time, like posting on HN complaining about total waste of time?