Why do we continue to suppress?

Everyone these days says this:

However, because fire is a natural (and often beneficial) process, fire suppression can lead to more severe fires due to the buildup of vegetation, which creates more fuel. (From http://www.usgs.gov/hazards/wildfires/)

It is true that we've been putting out nearly every fire ignition between 1910 and 1988. If you remember, in 1988, there was some sort of change of policy where some fires naturally started were allowed to burn -- to a point. Think of Yellowstone. Those fires were naturally started and they watched them burn for quite some time. It wasn't until the fires began threatening structures within the park that they started to suppress the fire.

Everyone seems to agree that fire is a natural and very important part of the ecosystem. Yet we continue to SUPPRESS SUPPRESS SUPPRESS. There's an interesting blurb about this on Wildfire Today.

One of the problems is that the wildland urban interface is continually increasing, meaning it's more and more difficult to let fires burn. This is what the main problem is in Southern California. The vegetation was used to burning; people built houses in the middle of it and suppressed everything; now when an ignition comes and gets out of hand, it's a serious problem. It's a no-win situation.