Some of our clients are purists when it comes to fireplaces-wood burning or nothing at all. Thats fine, we love wood burning fireplaces. Most often there is a mix of fireplaces in the homes we design, some wood burning and some gas.
I have an old home, the core of which was built from about 1790 to the 1860s. We have 4 wood burning fireplaces and I am just not comfortable going to sleep with a fire(or embers) burning in my master bedroom fireplace. Other reasons to have a mix of gas and wood fireplaces is the need to store firewood, dispose of ashes, and the fact that sometimes you just want the ambiance at a moments notice.
We often design gas fireplaces so they could be converted to burn wood easily if the home owners ever changed their minds. That rarely happens since over the years the look of a gas fireplace has improved to the point that some people can’t tell the difference.