As sad as that sounds, I think that ensuring the well being of a majority of people will always be more important than the will being of a few. I think that the greater good of a city by means of gentrification is just when it comes to the benefits.
Although I believe that the majority of people do not choose to be poor, I do believe gradual gentrification is beneficial to the country regardless of the negative effects on the poor. Cities are the center of commerce, innovation, and culture. To preserve and promote these positive traits, cities should encourage more gentrification within their limits. However, I do believe that this should be done in a way that does not uproot too many people. If gentrification is done correctly, it may help poor families get access to better schools, a better environment, and better services.
The larger picture is always more important than the worth of a few people. It sounds brutal, but that's the reality. If you're going to measure value based on lives, then the more lives the more it's worth. Individualism is important, of course, but not at the cost of the entire picture.
Gentrification is happening in a lot of cities and in certain parts of even more cities. This does often result in poorer citizens being forced out economically. Still, when cities are managed right, gentrification can be a good thing. Mixed income residence zonings help keep poorer citizens in their community, and the increase in wealth from gentrification should allow cities to provide more social services and a better safety net at the bottom of the economic ladder.
Gentrification benefits nearly everyone. It takes previously derelict and dangerous areas and turns them into thriving liveable neighborhoods. The only people really against gentrification are those afraid of change and those with racial prejudice against the new residents. The views of these people should not be allowed to stop what is a positive change for the rest of the city and its inhabitants.
What are cities besides places where a lot of people live? Some people have lived there a very long time and have developed a subculture there. A place where they can afford to live. The privileged folk can live anywhere they want. And there isn't much that's worse than someone moving into an area and then trying to tell the people who own adjacent property how to live. If you try to gentrify an entire city, you end kicking out long time inhabitants and then have a place where few can afford to live and work, few will visit. Which could be a real problem when the economy takes another downturn.