"But God has combined the members of the body and has given greater honor to the parts that lacked it, so that there should be no division in the body, but that its parts should have equal concern for each other. If one part suffers, every part suffers with it; if one part is honored, every part rejoices with it." NIV translation
God has a way of using the things or people that the world sees as lowly. He elevates them and uses them often in a mighty way so that it is easier for others to see that it is a work of God. Like the human body, the church should rejoice at all of the successes and mourn with the trials of all of the members. It is easier to do this if we picture the local body of believers as an athlete. For instance, take a soccer player; when a player scores a game winning goal, they don't cut off the player's leg and give it an award. Instead, the whole body is given an award and the body celebrates the victory. Likewise, when the chance at the goal is missed, the leg is not cut off and discarded.
"Now you are the body of Christ, and each one of you is a part of it. And in the church God has appointed first of all apostles, second prophets, third teachers, then workers of miracles, also those having gifts of healing, those able to help others, those with gifts of administration, and those speaking in different kinds of tongues." NIV translation
Now, Paul goes back to the fact that a group of believers is, in fact, the body of Christ. Just like a human body, there are different parts with different functions and he lists some of them.
"Are all apostles? Are all prophets? Are all teachers? Do all work miracles? Do all have gifts of healing? Do all speak in tongues? Do all interpret? But eagerly desire the greater gifts." NIV translation
We all have different functions or combinations of functions in the body of Christ. We are called to each use our gifts and talents for the good of the body. It is not wrong to desire the "greater gifts" as Paul even encourages it but the mature Christian accepts the fact that God gives the abilities to people as He sees fit.