“Whatever they want” only works when students know what they want. I did not know I wanted to ride a motorcycle until a friend got me to ride one. Many of my students did not know they liked economics until they took my economics class.
Students must be exposed to a variety of experiences to discover their passions. Teach students to be open to new experiences and to taste the smorgasbord of life. They may discover that fresh peas are an entirely different culinary experience than the canned ones they hid in their milk glass so they could get a serving of ice cream.