You can adjust the flames, and they don't waste heat the way the older models did by trapping it inside, or the way wood-burning fireplaces do by letting most of it escape out the chimney or flue. Contemporary fireplaces demonstrations that something pretty can be completely practical. And convenient. There are no ashes or dead embers to clean out regularly, and there is no need to be able to light a fire with newspaper. If you already have a wood burner, you can get a new gas insert to convert that old fireplace into a better fireplace.
It does not utilize wood so they are against the environment. Use of an electric fireplace doesn't produce any pollutant or harmful chemicals. There is no release of smoke from this kind of fireplace so there is no need for a chimney or venting system.