nod that's pretty reasonable, but my total living expenses are only 50% of my income, and I got a sign-on bonus. I'm basically planning on saving 50%, living off the other 50%, and then paying off debts from the savings as the savings passes a certain threshold (defined as 6 months of living expenses). Between the sign-on bonus and the "have fun so I don't fall back into depression and despair" part of living expenses (which is an ABSOLUTELY NECESSARY living expense and therefore already included in the non-saved 50%), $100 for a charity I believe in and intend on using myself later is absolutely in-budget.

And as for the risk of going further into debt, my debt tends to be somewhat discretized (due to interest amortization, student loan regulation, etc.) so certain methods and frequencies of payment are more efficient than others. $100 from my sign-on bonus is practically a rounding error.