Also tastes can and do change over time so do your characters do this? What did they like once but don't now? What put them off this?
What do your characters need as skills to be able to survive in the world you've created for them? What happens to those who, for whatever reason, cannot develop those skills? Are they a kind of underclass or put to death?
Do tastes depend on someone's class or are there groups of differing backgrounds who like the same thing?
Have fun finding out!