Luxury

To me, the ultimate luxury is the luxury of not being in it (whatever ‘it’ is) for the money.

I don’t think there’s anything in socialism that rejects (material) luxury, but there are many flavors of socialism. Environmentalism might have something to say about it. My personal ism (aside from anagorism) is negative utilitarianism, so I go by the logic that nobody should get luxuries until everybody gets necessities.