A wolf and a penguin could never live together, nor could a camel and a hippopotamus. That would be absurd.
And the older you get, the fewer things you really love. And by the time you get to my age, maybe it's only one or two things. With me, I think it's one.
When playing with Luxury containers, do you have to have a luxury container (in addition to one of each other color) to get $10 per 5/10 split value container?
No. See rule E5.8.