“For as in one body we have many members, and the members do not all have the same function, so we, though many are one body in Christ, and individually members of one another.” (ESV)
The church was not designed to be an operation of one. It runs like a human body. There are many different parts that all play an important role in the proper functioning of the body. In order for things to work like they should, every part has to play its part. If you are a part of the body of Christ, you have a role to play. Absent you playing that role, the whole thing will not work like it should.