I generally take it to mean that it's a fact of life that we all change. To fight against it and to dwell upon it is to fight the inevitable, so just accept it and move on. You don't have to forget those friendships, but neither do you need to hold on to them desperately
"It's not so much that it's 'shut down' as the government has been rebooted into safe mode."
- Tim and Daniel Shamblin