One party represents just what is good for them and theirs with no consideration for long term function and stability of the country. The other represents just what is good for them and theirs but realize they need the country to consider relatively stably for their own long term good.
Republicans - desperate to hold on to relevance, so they're going for short-term wins
Democrats - desperate to appeal to younger generations, and promoting the wants and needs of minorities seems to be working
I don't see either as caring too much for longer term stability. Democrats want to raise/eliminate the debt limit (i.e. more social programs), and Republicans want to use the debt limit for political concessions (i.e. appeal to base with lip-service to fiscal responsibility), neither seems particularly worried about balancing the budget.
democrats would allow taxes to be collected to not borrow much. Republicans would get rid of any taxes that are not straight out fee for service. Debt arises from not paying bills.
You can blame Republicans all you want, but the point is that Democrats haven't been serious about raising taxes to cut the deficit. On the other side of the aisle, Republicans haven't been serious about cutting spending either. I find both major parties wholly disappointing, because even when they have a majority, neither actually does anything to really fix our fiscal problems.
What makes you think the democracts have any interest in the "younger generation?" The average age of democrat leadership is OLDER then republicans. Voter turn out among the younger generation is also abysmal because the dem do not appeal to the younger generation at all.