Luggage tags are extremely useful and handy to have around. It isn’t just an identification tag that can help you if your bag gets lost, it is also a bag that becomes easier to spot.
Imagine a ton of bags in a train cargo, or an airport carousel with a lot of people milling around trying to grab hold of what they think or assume is their bag. It take time to claim your bag, but with a great looking and unique luggage tag, you can be out of there in seconds.
Many carriers provide personalized luggage tags, but this is for their internal identification purposes, and relying on these luggage tags won’t really benefit you. After all, everyone with you will have a similar tag. You’re better off finding or creating a luggage tag that stands out.