Dude, you're totally speaking my language right now. This is how I am as well, and why I have such a hard time following a lot of the discussion here. I try out a lot of shows and usually end up dropping at least half of them.
In general, like most everyone else, I think like things that I consider to be good. The problem is, saying this isn't really helpful when trying to find new things that are good. For me, good is some kind of balance between quality and enjoyment. I can excuse inadequacies in presentation if I find a high level of enjoyment otherwise (like story, or character development). And if I'm going to relegate myself to watching slife of life, or moe, it needs to at least *look* good - because I know I won't be interested in their daily bullshit. I thought K-ON was enjoyable, even though a lot of it was mundane, because I loved the way it was animated, and how the characters were drawn. Simply paying attention to the visuals was enough for me. And when Azunyan came on the screen I could feel my heart racing and my palms getting sweaty. To me, that's moe - it's that similar feeling that you get in your chest when you see a really good porn. This is why I can say that K-ON was good, even though it probably wasn't.
I really think I just need to drop slice of life and school-setting animes for right now. It's hard for me to choose what to watch knowing I'll have no idea what I'll get, or what I want. One show that totally surprised me was Spice and Wolf. If I were trusting my senses, I probably wouldn't have chosen to start watching it, as it was a completely random decision. However, it became one of my absolute favorite shows in recent memory. It wasn't animated very well, but it took place in an interesting time period, it had something to talk about (the corruption of the church, the impact of market manipulation on currency, etc..), and it also had some interesting dialog that sustained the less suspenseful parts of the show. It had an amazing soundtrack. Upon reflection, it maintains a very memorable and impactful show in my mind, despite some of its obvious flaws. So on one hand I want to remain open to the idea of being surprised like this, but I also want a more consistent way of selecting better viewing experiences out of the endless amount of shows that are available.