Passing bills doesn't require a super-majority either. Neither does approving amendments or budgets. Once the precedent is set, and the Democrats get a majority again, what's to stop them from using the same procedure to never allow Republican filibusters on anything, including bills, amendments, and budgets, even if Republicans only apply it to appointments?
Exactly, and appropriating money is a Constitutional responsibility just like approving judges. When I sit and wonder how we got to the point where emotion overrules the Constitution ("well, he had to do something..."), I see this suggestion and I understand.
As frustrating and maddening as it is, the only hope to restoring the Constitution is to use logic in evaluating propoals. Logic agrees with you.
Just like cops have to be the good guys all the time, conservatives have to be principled at every turn. Alternative analogy: to be a virgin, you have to be a virgin everday, but to be a slut you can take a day off. Thus, conservatives have to be pure all the time, liberals can take a principled stance when it suits them.