There are some really great posts here.

Usually you just have to grin and bear it when drawing in public, or in a place where non furs will see you. Usually a witty comeback or a threat to eat their children will send them on their way.
Its fun to see what can come out of someone's imagination, or the way someones mind can twist or even create a form from scratch on paper.
The pro for me is that it is a creative outlet that lets me flex my brain meats and allows me to see what comes out. It also helps me relax, and let loose. I also can't draw people to save my life, I find anthro much easier.
It also gives me the chance to try and play with new mediums, which is always fun :3
Cons: Uuuuhhhhhmmmmmmmmm... When drawing nude, but non sexual models and studying the form, most people get up in arms about it. Especially if its anthro. Because of our society, we are made to feel like we should hide ourselves, or be ashamed of what we are. That the naked body is something taboo. And of course, that means the study of a form, or even experimenting with a form on paper can also be frowned upon.
Not saying that I want to be able to draw porn on a city bus everyday without getting awkward glances, but to not be judged by what resides in a sketchbook would be nice.
But people are going to think what they want and thats that. Life goes on, can't please everybody, so why limit yourself and the things that bring you enjoyment just because someone doesn't get it?

-Tj