The main reason why avoiding student loans would help set the tone for not taking on debt for the rest of your life is that it would give a person the drive to make money without taking a loan.
This refers to the amount of money or securities collected by a person for some time for a certain thing, to pay back with interest.
Hence, we can see that based on the fact that student loans can be helpful to pay for tuition and other school-related stuff, the interest charges are somewhat high and by being debt-free, one can learn to be self-sufficient.