You're almost certainly not the "only one." But, most of us don't bother because it doesn't provide any additional security (and might mislead you into thinking you can make your network less secure).

See "Why Non-broadcast Networks are not a Security Feature" at http://technet.microsoft.com/en-us/library/bb726942.aspx#EDA...

Doesn't it also make it more difficult for neighbors to check for channel conflicts?

No, it doesn't. Spectrum analyzers can detect WiFi signals regardless of whether or not they are broadcasting an SSID, which includes discerning what channel they are on. By extension, most software built-in to WAPs that automatically chooses the channel to reduce conflicts will do similar spectrum analysis. You can read GP's article from TechNet for more information on this.