I am very interested in philosophy and took college courses in it. it is just so fascinating and teaches us a lot about the world. 
Even the fact you are in school is Philosophy which translates to love of wisdom.
I think there is so much behind everyday things and everyday decisions. Understanding these things can help you function in the world. 
Its the very philosophical method to question and discuss these thought.
If more people thought about things like that, the world would be different. People don't think about their motivations or why they do things. Philosophy can teach you about the world and yourself. 
the classic question is, Is it possible to know anything, and to then even prove it?
I think there are more questions than answers, especially when it comes to philosophy! 
I personally adhere to Skepticism as I don't think any answer could be just adequate.
I think everyone has to make their own decisions. I think sometimes more than one decision can be right when it comes to philosophy because ultimately it is your way of looking at things and everyone has a different perspective. 
Which circles back to the question of do humans have free will.