"At the same time mainstream denominations lose thousands of members per year, churches such as Crosspoint are growing rapidly — 15 percent of all U.S. churches identified themselves as nondenominational this year, up from 5 percent a decade ago. A third dropped out of major denominations at some point."
More churchgoers ditch their denominations
http://www.tennessean.com/article/20110101/NEWS01/101010318/More-churchgoers-ditch-their-denominations
Considering that denominations are labels for common secondaries beliefs, most of us have left the churches that we grew up in (Catholic in my case) and found a more comfortable environment (truer to oneself) to worship God. Definitely from my own experience, I found in FAPC (http://www.fapc.org/) that truer spiritual home for me to be able to worship God.
"Denominations share theological, organizational and legal ties. They send out missionaries; build colleges, seminaries and hospitals; and fund pension plans for pastors."
More churchgoers ditch their denominations
http://www.tennessean.com/article/20110101/NEWS01/101010318/More-churchgoers-ditch-their-denominations
At the same time, some Christians opt to lose its ties completely from denominations. These Christians don't identify themselves with secondary doctrines of a specific denomination or simply refuse to be labeled.
On a personal level, I prefer a denominational environment where I know what to expect in a service -- a fixed pattern. I just opted to go to another church.