YES. If you have a business on the internet, then in all likelihood you’re going to need traffic (website visitors). Otherwise, no one is going to buy anything.
Think of it like this…
Traffic for your website is like gasoline for your car.
If you have a car and you want it to go somewhere, you have to CONSTANTLY add gas to it.
And if you have an internet business and you want people to get on your list and buy stuff, then you have to CONSTANTLY add traffic to it.