Bird-
The whole credit score thing (for the most part) has nothing to do with responsibility but with the companies being paid interest on a consistent basis.
So, we could argue that- the responsible consumer who uses credit, maintains a balance and, pays on time provides the industry with income. So, the credit score increases to tell the rest of the industry "hey- this consumer is a good risk to generate revenue from interest". In a sense, that consumer is a good, reliable source of revenue.
Now, the responsible consumer who doesn't use credit, provides no revenue for the industry therefore- is not a "good risk" for several reasons. Obviously, the history of responsibility with payments hasn't been established (either a "young" consumer or from not using credit at all) So they cannot gauge if the revenue will pay off. One could also argue that the lower credit score is to keep them out of the system because it will tie up their capitol on this person and won't pay off vs the bunch of others they can generate revenue off the same amount of capitol.
The whole thing with bumping interest rates for non payment just sets up the company for a big win. the responsible, trying to honor the debt- scrambles to make payments and in reality- the industry recoups the capitol quicker with little revenue generated.
If the person files bankruptcy- then they are "out" of the system and if they want to re-enter, the industry has the control again. All sorts of rules govern this and it is not as easy for a person to successfully do this.
If the person deals with "settlements", the industry still wins because they get some money back and bump the consumer "out" of the system. Now in this scenario, the interest and fees have bumped up the balance and if the consumer is not careful, the "settlement" they end up with is close to, if not more than the balance was before all of the fees started. So, the capitol is recovered and the consumer in ruins.
Although I am a self admitting conspiracy theorist, this is still basic fact. I shall now turn the soap box over to the next deserving opinion...