Why are the lengths of Terms of Office important in balancing the need for democracy?

Terms of office prevent someone from becoming king when they are president. Eight years for a president in office is enough time to get things done. The House term of two years allows for some to get experience, but with no term limits they can run again. The 6 year term in the Senate allows for people to have the experience of government without term limits. Many local and state governments do have term limits on elected offices because they want new thinking and to bring in people who better represent their state or city.