My temporary solution is to max out my employer's annual match. That the maximum match is somewhere between 10 and 15 percent of my income is very convenient, as that makes me feel like I'm contributing the "expected" amount for an EA (this feeling is only important for fuzzies) but still leaves me with what seems to be a good amount to save and spend. It also allows me to avoid committing an answer to the question of whether to donate now or invest and donate later. The guaranteed, almost-immediate, soon-to-expire 100% return provided by the match wins pretty clearly over the EV of investing and donating later, and since I feel like I'm donating enough for now, I can evaluate what to do with what's being invested later on, based on my wants and needs.