As developers, we are often one of the last lines of defense against potentially dangerous and unethical practices.
The human brain’s capacity doesn’t change from one year to the next, so the insights from studying human behaviour have a very long shelf life. What was difficult for user twenty years ago continues to be difficult today — J. Nielsen
Every opportunity you had to share knowledge with the team and didn’t, that is a lost opportunity further down the line for you to do something new and exciting. You will be constantly weighed down by the things only you know.