What would you say is the most common use case of 3D modeling? The most fun? Thank you!
The current trend and/or proliferation of jobs would be gaming and 3D printing. There's also things like legal animation where you're animating an accident or situation for court; scientific animation which they use for movies such as Interstellar and Gravity; architectural modeling for people who build hoses or sell land and want to show the buyer how buildings will look on the land; and of course films. Games is mostly what you would find online as far as jobs. 3D printing is a growing industry in which everyone is opening a 3D print shop and possibly offering services where people can customize their prints.
The most fun would be depending on who you are. I have a preference for film/tv modeling because I know how to hi-poly model. Game modeling requires low-poly knowledge. Some of the other industries can be either/or.