Bringing extra socks can be a good idea for several reasons:

1. Comfort: Having extra socks ensures that you can change into a fresh, clean pair if your current socks get wet or dirty.
2. Warmth: If you are traveling to a cold place, extra socks can help keep your feet warm and comfortable.
3. Convenience: In case of an unexpected event, such as lost luggage, having extra socks can be helpful to have at least some clean and fresh clothes.