• Cheaper in the long run. A good treadmill will cost over a thousand dollars, and a membership to a club or gym will run between $20 and $50 a month, sometimes more. In addition to this, there are also sign-up and processing fees, which can be hundreds of dollars. Buying a treadmill will save you money in the long run.
• Work out whenever you want. Buying a treadmill and using it from your own home will allow you to exercise whenever you want without worrying about getting to the gym by the time it closes or navigating through traffic in order to get to the gym.
• Safer. Many people who get a treadmill do so because while they enjoy walking and running, the threat of dogs, cars, and other potentially dangerous situations makes it risky to go running or walking outside.
• Never wait in line. Treadmills are among the most popular machines at the gym. Depending on when you go and how many machines your gym has, you might have to wait in line for a treadmill. When you buy a treadmill, however, you don't ever have to wait in line - you can just hop right on whenever you want.
• Work out year-round. Sometimes, weather will keep a person from running or walking outside. Rain, extreme heat, and snow and ice make it difficult to get running and walking time in. When you buy a treadmill, you can exercise any time, no matter what the weather is like outside.
• Save time. If you often find yourself pressed for time, you may want to consider buying a treadmill in order to save time when working out. Driving to and from the gym, checking in, waiting in line to access a treadmill, and so forth can add up to an extra hour every day! Buying a treadmill to use in your home takes no more time than walking up to it, doing your workout, and then hopping off.
• Ease. Many people skip their workouts because they don't feel like going all the way to the gym or going for a walk or jog in the rain or other bad weather. Or, maybe they are uncomfortable in a gym. People who have treadmills in their homes are more likely to work out on a regular basis than those who have gym memberships or do their workouts in the outdoors.
• Privacy. For some people, the thought of going to a gym or health club and working out in front of large groups of people is intimidating. When you buy a treadmill, however, you don't have to worry about that - you can simply close the door and work out in the privacy of your own home.

These are just a few of the reasons people buy a treadmill of their own.