There are many different types of law enforcement. In some, you will be dealing with crime multiple times a day. In others, crime rarely happens, and you end up being more of a presence, doing more of what is known as community-oriented policing. Airports, parks, schools, for example. Here, you have more time to talk to people. They expect you to be knowledgeable about dealing with life - financial management, relationship problems, car repairs, etc. Here you have a chance to make a difference in someone's day. Sometimes, just giving them directions when they are lost really makes their day - it's often the little things we do for people without even thinking about them that end up getting letters of appreciation sent to the chief.
An example: a lady was traveling alone with a 5 year old and a newborn, and was visibly stressed. I talked to the 5-year old, explained about being "the man of the family." Made him responsible for counting all the pieces of luggage every time they got on or off a plane. His behavior noticeably changed.
As a cop, you can almost guarantee that you will meet some sort of "jerk" every day. But, you will also meet a nice person. It's the one you choose to "take home with you" (mentally-speaking), that will make all the difference in the world. Remember the good in people, and you will be a good officer.