Sure, but that opens up a lot of other difficult topics, all of which are very nuanced. If we're not going to consider 18 year old's adults, we need to re-visit the age limits on voting, military service, and other large financial contracts.
In the end, it always comes down to (some degree of) personal responsibility. Just because the government (or your job, or your family, or some guy you met on the street) offers you a new and novel way of ruining your life, it doesn't mean you have to take it. If the choice is pay your student loans and keep your credit score, or pay your rent and avoid being homeless, well, that's a terrible choice to have to make, but the answer is obvious, and the manner by which someone ended up in that situation is also pretty obvious.
In the end, it always comes down to (some degree of) personal responsibility. Just because the government (or your job, or your family, or some guy you met on the street) offers you a new and novel way of ruining your life, it doesn't mean you have to take it. If the choice is pay your student loans and keep your credit score, or pay your rent and avoid being homeless, well, that's a terrible choice to have to make, but the answer is obvious, and the manner by which someone ended up in that situation is also pretty obvious.