"WHY SO SERIOUS?"
it's all about work/life balance. Just because I am going to 'professional' school, doesn't mean I have to be an uptight stiff that eats/breathes/sleeps dentistry 24/7. Different strokes for different folks, but if you are not enjoying school, then you are probably doing it wrong.
To the OP, I think UoP is a fun school.
When I was choosing schools, I knew all of my top choices were academically and clinically excellent, but it was the 'warm' atmosphere at UoP that put it as my top choice. Staff/faculty/students treat each other kindly and we get respected as colleagues. For me, being treated kindly, and viewed as a colleague, makes sense. D-school is intense, and anything that helps reduce stress is welcome.
Students at UoP like to have fun, whether it be having a few drinks after a tough week or participating in a school sponsored event.
Just yesterday, as fulfilment of his campaign promise, our class president presented a music/dance video he put together. It was goofy and provided a great laugh, which was great for relieving stress at the end of an intense academic week that will be followed by another just like it, only harder.