Many people do not see the value in replacing their front door. The fact is 70% of a homes heating and air conditioning travels out your home through your windows and doors. Most front doors are very inefficient and culprits for massive heat escape.
Door technology has improved greatly in the last decade. Fiberglass doors are very popular because they are engineered to look exactly like natural wood or metal doors but they won't fade, peel, dry out, crack like natural wood doors; and unlike most metal doors they won't rust. In other words, they are maintenance-free.
Another important reason to replace your front door is that it creates a first impression to guests when they visit your home and adds curb-appeal to the front of your home which can increase the resale value of your home.