One has to decide, do I give up some comforts to make things better for others or not?
I'm sure it's usually pretty easy to convince oneself that others won't give up the comforts so nothing will change and just continue using the services.
How does it make things better for those people? By taking away their opportunity? So they go home, and rethink their life, and come up with a better way to make money?
Great, but is taking away bad jobs really the best way to do that?
Just to be clear, whose life is being made better by you not taking delivery of food? The now unemployed delivery worker? The restaurant workers? Yourself?
I'm sure it's usually pretty easy to convince oneself that others won't give up the comforts so nothing will change and just continue using the services.