So they made a decision that opportunity > debt. Thus I see no reason to have others pay for their decisions. They freely chose that option. They should be adult enough to live with it and not ask for handouts with tax payers money.
Do you live on a deserted island alone? If not, then why do you seem to think the opportunity cost of other people being uneducated -- your neighbors, local business owners, motorists driving by your house, voters, politicians, etc. -- is only a cost to them, and doesn't affect your life?