One of the main reasons gardeners and homeowners choose to implement or path or walkway on their lawn or garden is simply to provide better access to hard to reach places such as gardens and flowerbeds. A walkway can prevent inadvertent damage to flowers, vegetables, and other plants by providing a clear-cut path for you to travel through.
Paths and walkways are also perfect for redirecting your family's feet off your manicured lawn. If the best shortcut to the front door happens be straight through the front yard, you might as well create a path for people to walk on. Otherwise, the lawn is going to be destroyed anyway.
Paths and walkways also add a new dynamic to your landscape. Paths and walkways give a calm, welcoming effect to your yard or garden, almost as if to say, "good things await you if you follow this path."