Nobody loves POP more that I do, and I never drive at WDW so I use the busses all the time. But...well, let me just admit it's not always an enjoyable experience.
Let's say what it is - it's safe, convenient and free.

I will even say that I think it's pretty fast - I've never experienced unreasonably long wait times going to and from POP (and I cannot say that of other resorts, including some deluxes). And you don't have to share a bus with other resorts, making extra stops.
Now for the not so pretty. They can get pretty crowded. And stinky. And loud. And full of tired, cranky folk who often find it challenging to use their manners. (And God Bless the parents trying to board dragging a stroller, a toddler in melt-down and a sleeping infant over the shoulder.)
Then there's the bus stop. No denying it can get hot standing out in the sun with no cover. And, yes, coming home from the parks the POP bus stop is always a good hike away. (But, POP busses are plentiful when the parks empty, often pulling into the bus stops one after another or 2 at a time to handle the crowds.)
My point is: It's not FantasyLand. Sometimes you get a great driver who can tell a good joke and make it a pleasant ride. But, often, there's just nothing magical about it - it's just the necessary way to get to the magic. So, we just come prepared. And make the best of it. And, yeah, at times we even like it, but sometimes...
