First let me say that you have done amazing work for the NOLA communities affected by Katrina and you should be commended for that. My point to you was that there are many socio-cultural/economic, psycho-social, and structural factors that need to be considered when you imply that many of "these people" (a highly charged and offensive way to refer to people that implies that they are somehow less than you) have not appreciated and taken advantage of the opportunities that have been offered to them.
To your final point, I don't need you to tell me where to go and help. I am from Baton Rouge and lived in New Orleans for many years prior to moving to the west coast. I know the region of the country, and the city very well both on the political and structural level and on the community level. Finally, I too was among those assisting in the effort after the hurricane. I saw the same people and the same devastation. Although, judging by where you did your volunteer work, it sounds like you weren't in the cities of New Orleans and Baton Rouge, "Ground Zero" if you will, witnessing what happened to people's homes, families, and communities. FEMA trailors were parked by the hundreds in the park behind my fathers house in Baton Rouge and many of them never went to anyone. Some, in fact, are still there 3 years later. The people who were put in those trailors, "temporarily" were left there for far too long (sort of like housing projects) and many of them developed health problems because of the chemicals used in the structures of the trailors. These trailors were meant to be temporary fixes, not long term housing and all of this happened while they waited for the government to fulfill the promise to help them rebuild their homes.
Oh yeah, you mentioned quite a lot of great and wonderful things you help to make happen for "these people" but you left out the most important one - at the end of the day, they still didn't have a home to go home to.