You've got some horrible prejudices in here that I'm going to challenge because I see these preconceived notions about people as why you and they give up.
The things that got them trapped in the ghetto in the first place are forces beyond their control
The thing that has them trapped is their own mind. There is not a single person that could not walk out of that ghetto today and get help to move up to something better. There are job assistance programs out there that will help you move up, assuming you blew your first chance in primary school.
But that's the issue, I'm defining "better" in a way they don't. To them, better is Obama paying their mortgage and free cell phones and that just isn't sustainable. Who perpetuates the idea that living off freebies from others forever is even categorized as good?
They are not trapped, they are making a choice to take free stuff because we continue to make the free stuff available to them.
...most damaging factor in all this mess, sending most of the males to prison before they have any chance at becoming a decent MAN.
"Most" males don't go to prison before they become decent men, the number is high at 35% and that includes the entire lifetime of adult males. They go to prison BECAUSE they fail to become decent men and BECAUSE they break laws.
Assuming there IS a job out there for you, if it's not a fun job,
Where do you have the idea that a job should be fun? Work is a four letter word and you don't get paid to do what you want to do, you get paid to do what needs to be done. A job doesn't have to be fun, some of them really suck.
And there ARE jobs out there. There are job training programs out there for anyone who wants it. The trouble I see is that government has made being idle tolerable or even comfortable. It should never be a tolerable choice, it should be uncomfortable in order to very strongly encourage everyone to work and to gain the self respect of self sufficiency.
Being a famous musician or actor has got to be one of the most high pressure jobs possible
Sorry, but "famous musician" doesn't make anybody's list of most high pressure jobs. Firefighter, police, military, pilot, LEO, teacher, corporate executive, heck even taxi drivers have more stressful jobs.
If you have a job that is very meaningful and rewarding, you're less likely to do drugs but if you get your engineering degree and can't find a job other than flipping burgers, and someone enables you by paying your rent and groceries, you escape worrying about your dismal career prospects by doing drugs.
There are a lot of people with engineering degrees doing drugs rather than flipping burgers? Here,
http://www.engineerjobs.com, 300,000 engineering job in the United States. If you want to complain that the standards are too high, then complain to businesses, I have the same complaint. But the jobs are there and it's a matter of marketing yourself correctly to get them.
If you don't like that, then there ARE jobs flipping burgers. Or driving the garbage truck. Or even sweeping up the barbershop floor. Every single person has the ability to contribute something and if they choose not to because they'd rather hang out then I really don't have sympathy for them.
There are lots of places that I place the blame, but one is social promotion in schools. If a kid hasn't learned what they need to know then passing them to the next grade tells them that knowledge is irrelevant when the exact opposite is true. I don't care if you get 18 year olds in the 4th grade because they can't master the material. Set the standard and require that people meet it to advance. That's the best lesson they can learn in school, achievement matters.
Then take away the free stuff, there is nothing more disrespectful than to suggest to someone that they're worthless and cannot do anything. Everyone contributes.