The church disappoints because it only pays lip service to Christ. Meanwhile, its actual purpose is to preserve itself and grow. When people come to church to find God, they are eventually disappointed as they realize the church’s actual purpose. At that point they usually start looking for another church…but the process will lead to the same result at another church. Some people finally recognize the futility of this pursuit, lower their expectations, and stick with their disappointing church. Others recognize the futility and quit going to church altogether.
However, avoiding church will do you no more good than attending it. What matters is that you seek Jesus Christ our Lord. If you do, and if you stick to that pursuit, you will not be disappointed.