The point I was trying to make was as follows: Good poetry will evoke a strong response from the reader, as will really bad poetry. However, a lot of poetry falls in the middle - sometimes it feels like the poet couldn't put into words all that was going on his/her head, sometimes you feel like you may be reading too much into the poem, and sometimes you're just going 'WTF?'. It gets worse if you don't have a context to place the poem within. It's a bit like trying to taste a wine and figure out if it's something worth drinking, something you don't like right now but should acquire a taste for, or just overpriced plonk.
For example, consider the following poems. The first is a haiku attributed to Jason Strugnell (more on that later):
The moon is up, rooks settle,
The pubs are open.
Now consider this poem, 42 by e. e. cummings
Now go back and read the two again. Hold whatever thoughts you have.
Now go read up on Strugnell and cummings. Does your perception of the two poems change?
I don't think the haiku is great, but I bet if I recommended it enthusiastically enough to people, a fair number would just wrinkle their brow and wonder why they didn't get it. Similarly, the cummings poem makes some sense only in the context of his larger work. Otherwise, it's borderline pretentious.
In short, context can make or break a poem. Also, it helps to have someone you can trust recommend stuff to you.
Incidentally, if you're really interested in reading poetry, you could do worse than joining the mailing list at the Wondering Minstrels. Along with poetry, you get context. I managed to keep up with it for a fair while in college, but I eventually fell too far behind in my reading once I started work to really keep up with them. I remember introducing at least one friend to the list in college, and she became a pretty regular contributor after that.
In lieu of a smart and sassy closing statement, here's a poem from the person who created Strugnell, Wendy Cope:
Making Cocoa for Kingsley Amis
It was a dream I had last week
And some kind of record seemed vital.
I knew it wouldn't be much of a poem
But I love the title.