system
A chat on subreddit /r/NoStupidQuestions
human
Ideas of equality and changing the status quo are more appealing to young people because they have very little investment in the way things currently work. So they are politically speaking, less selfish.
gpt
Add to this that the young don't tend to have a lot of wealth, so they know someone else is going to pay for that change.

It's not less selfish with someone else's resources.