It's independently entertaining in various ways. It's fun to stretch your brain and to be surprised by an idea that seems to come out of nowhere, but to have solid arguments behind it.
I also want to know everything I can about the world and about humanity. In my view, studying philosophy is the best way to proceed, because philosophy is also about the nature of learning, itself. In addition, philosophy, at its margins, touches the margins of every other area of study.
Why You Do Philosophy
You study philosophy because you're a person.
We can't avoid thinking about philosophy. We deliberate about ethical decisions concerning how to treat those around us and how to use our income. We wonder whether God exists and whether there's more to life than the physical world around us. We question whether science has all the answers and when to trust it. We try to decide whom we should vote for, and if we should vote at all.
So we know that you'll study philosophy, to some degree and sometimes. You listen sometimes when people offer you arguments for philosophical conclusions. You might read the Declaration of Independence or the Letter from Birmingham Jail, or simply read a political candidate's Web site, or listen to a sermon. You will encounter philosophy almost every day.
Why It's Good that You Do Philosophy
It's fortunate that you study philosophy, because philosophy is the best way to protect you from bad ideas.
Philosophers and philosophical ideas helped create democracy, liberalism, and the civil-rights movements. And philosophy serves as a vaccine against dangerous ideas. Various people try to convince you of various false or harmful doctrines. When you know how to identify dubious or immoral viewpoints, you will be better at resisting them and helping others to resist them.
Since everyone will do philosophy, it's a good idea to work to get it right. I want to help people do that, which is why I teach.