A church is made up of the believers, the head of the Church is Christ. The building itself is the place where people gather together for corporate worship. Hebrews 10:25 Not forsaking the assembling of ourselves together, as the manner of some is; but exhorting one another: and so much the more , as ye see the day approaching.
There are no doubt a lot of differing views on how a corporate worship service should be held. Lots of disputes and splits have happened over the directions of a church. As the term worship service implies, the service should be centered around God, and not around pleasing ourselves with what we want to hear message and music wise. The service should be about glorifying God, and hearing his word so that we can apply it in our daily lives. There is just something special about hearing a congregation singing hymns of praise to God. Coming together and sharing prayer concerns even sometimes unspoken ones as a congregation is important to believers. It can be such a blessing to be amongst a loving congregation when it is centered around God.
It's easy to get off track, and being plugged into a church as our Pastor refers to it, is a good way to be encouraged and to encourage others when difficult times come.