Running is whatever you want it to be! You can get anything out of running. It is for every skill level, every interest level, and is nondiscrimatory. You get everything out of running that you put into it.
I'm always grateful when I can go out and run, especially when I have a sitter so I can run stroller-free. Maybe not at the exact moment of running (sometimes), like right in the middle of hard intervals, but afterward. It's such a pleasant feeling to know you completed something challenging and beneficial. The endorphin rush is a nice bonus too.
I don't think I could ever compile a list of all the benefits I've experienced while running--or all the ways I've changed due this sport. All I can really say in summary is that through running I've forged incredible friendships, realized my physical potential, demolished mental barriers, achieved feats of endurance and strength I never felt capable of, and discovered new found appreciation for my body and for life.
Running frees me. It is a time where I can forget the little stresses of daily life. A time where I can get to know myself better: physically, and spiritually. Physically, as I focus on breathing, posture, footfalls, and form. And spiritually, as I contemplate the beauty of my surroundings, express gratitude for the many blessings bestowed upon me, and experience a serenity that can only come when mind and body are in sync.
Running is the time to rediscover myself--a time to mull over any random thought that comes to mind. A time to focus on what my real priorities, loves, interests, and goals are.
Running is a great stress reliever, a great way to stay fit, a great way to reconnect with yourself and nature, a great way to make new friends, a great way to strengthen current friendships, and a great way to just have fun. Why do you run?