Usually I would say that roots firm us up. Give us structure. Provide support. In that, roots are good and useful.
Sometimes, though, they can keep is from reaching out beyond ourselves. Sometimes roots prevent us from pursuing the impossible, which, if pursued, we may discover isn’t as impossible as it seems.
At those times, roots hinder our development.
You can never know which time is which. And you never want to sever roots. But sometimes it’s a good idea to dig them up a bit, and see how far you can move.