They'll tell you if a natural gas line runs in front of your house. If it does, there's usually no charge to run a service line from the street to your home if you plan to use natural gas for heating, water heating, cooking, or clothes drying.
Natural gas is the most environmentally friendly fossil fuel.
A gas furnace heats your home with warmer air than that generated by an electric heat pump which makes a home feel drafty. Gas furnaces are less expensive to maintain and last about twice as long as electric heat pumps. A gas water heater works nearly twice as fast as an electric one, so you're less likely to run out of hot water. In a word, control. Professional chefs prefer the instant flexibility of gas cooking for exact, controlled food preparation.