Your story is repeated over and over. Some people are just going to be how they are, no matter our good intentions. I was you. Your story was my story.
I had to change my tactics. Now I offer to provide info/product only if I feel fairly sure it will be received. I send articles with no comment, and with no expectations. Expectations always left me disappointed. I provide product only when the person says they will use it if I send it. I have been disappointed there too.
This is my favorite saying, "Sometimes all you can do for people is love them and pray for them."