"Is there such a thing as a truly selfless act?"

yes
duh
yes
but that the word "selfish" has been so fucked up
that's the problem

greed and need differ more than by letters

don't demonize or rationalize your nature
lack of healthy self concern causes problems too
but lack of self sense the most

guessing again until you think you have the "right" answer
is not like getting a second opinion
if you can turn around
maybe you can find what you "left" behind