Is it really useful to pay for illustration classes?

In this "face-oriented" era, illustrations are very popular, and they are an enviable profession, especially freelance illustrators. They don't have to work, they take care of their own work, rest if they want, and work if they want. How comfortable it is is the dream working state of most friends.

Moreover, as far as the future work development direction is concerned, the demand for illustrators is in short supply, which is worth considering.