This game has bad design choices, bad controls, bad graphics and a stupid story.
The controls weren't that bad, they weren't the tightest but it's not like you're fighting the physics engine the whole way through. The graphics in-game were pretty mediocre, but the real kicker is the "Sonic Slider" as I like to call it, where the cutscenes start out beautiful and slowly degrade. I enjoyed the story, just not the not even PG-13 attempts at being edgy.
I still find it way more fun than Sonic Heroes.
I loved heroes, easily my favorite.
As for guilty pleasures...not really sure i have any.