My brain filters it out automatically. Altruism is not even on my mind AT ALL, until I sorted out my own problems and feel the life of me and my family is reasonably secure, happy, safe, and going up and up. I don't feel I have any surplus for altruism.
I guess in practice I do altruistic things all the time. People ask me for help, I don't say no. I just don't seek out opportunities to.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.