The Electoral College was based on the number of seats each state has in Congress (the United States House of Representatives and the United States Senate). When our founding fathers were debating how to construct our government, there were major arguments over the amount of representation each state would have. It seems fair that each state have the same number of representatives. However, some states are larger than others, contributing more to taxes, GDP, and so on. Those large states did not think they should be counted equally with the tiny states. The smaller states argued that if the representation was based solely on size, the biggest states would get so many representatives that the smaller states voice would essentially be silenced.
Our founding fathers came up with a compromise to provide fairness to every state. That is why each state is perfectly equal with 2 representatives (Senators) in the Senate, to provide the smaller states with an equal voice. Yet, each state has a number of Representatives in the House of Representatives based on population (size), to provide the larger states with a louder voice in the House. However, bills need to pass both chambers to become law. This ensures that big states don't overpower small states and that small states can't bully big states.
This is a perfect balance between the interests of large and small states. Our Electoral College operates on the same premise. If we eliminate the Electoral College for a straight popular vote, Presidential Candidates would only campaign in California, Texas, Florida, Illinois, New York, Pennsylvania, and Ohio. Granted, our state is in that list of big states, but are we so arrogant to think that we should ignore what people in Idaho, Vermont, New Hampshire, Montana, and other small states have to say? Don't their votes matter too?
I support our Electoral College because it is the best way to fairly balance the interest of all Americans, regardless of whether they live in a small state or a big state. As citizens of a larger state, we have a responsibility to respect the interests of smaller states and to treat their opinions with the seriousness that we want them to treat our opinions.