Yes you do. Everyone needs something from someone.
You need someone to provide your home with electricity. You need someone to provide running water. You need someone to grow your food.
In the end everything in life is taking advantage of someone else. The more you take advantage of people the more you get. This is a well known fact.
You can't say you don't need anything from people unless you're 100% self sufficient growing your own food and treating your own water which I know you don't do.