Be_ann - wire hangers are great for packing your clothes in your garment bag, they take up much less room than plastic ones. Princess has really nice beefy wooden hangers , you can always ask your room steward for more hangers.
I guess I'm silly compared to everyone else, but I know the cabin stewards are busy with more important things so I hate to ask them for extra hangers. I do agree it's a personal preference. My husband and I hang just about all of our clothes, so we use up the provided hangers quickly and always need more than a dozen extras. If you don't plan on hanging most of what you bring, you should be fine with the provided supply.