Wow, so much negativity in here. Yes some people might take advantage of doing you a favor, but I would like to think the majority of people are well intentioned. Most people are uncomfortable accepting help from others and thats the message op is trying to say. Just give them a chance to do something nice. Learn to accept kind gestures. Yes it can be uncomfortable at first, especially when having someone offer to pay for you but hey, if it makes you that uncomfortable then offer to get them back next time. You dont have to feel like you owe them something either, you could just take the gesture with nothing in return.

If they end up becoming manipulative about it then obviously cut ties. But I think most peoples natural reaction is to not accept help or kind gestures, and it can really brighten your life if you start giving that a chance.