I've been trying to read Moby-Dick for years, abandoning it many times since high school. When asked to set up a book club for those wanting to tackle the big classics, I couldn't do anything but pick the most large, 'uge, magnificent book ever written.
And, having finally finished it, it's OK. I see why people invest so much energy into this work and enjoy parsing it out, but in the end I would have preferred a little more sailing adventure and less arcane mythological references and asides. Melville had a plan and he followed through with his deconstruction of the novel by constructing an even larger novel around its architectural corpse.
There were passages of brilliant intensity and longing, rewarding humor, wide progressive streaks on race, relgion and sexuality, and romantic squeezes in the spermacetti, but the dull implacability of much of the novel was too intense for me. We were quite torn up about the book at the meeting, but we all agreed that the foreskin helmet was awesome.
'Moby-Dick' is something you have to read for yourself, if you want to. Like with everything, I suppose, your mileage may vary and you might not want to invest the energy needed to break into a novel like this, and that's OK. I gave it a solid 65% of my attention and appreciated it, but its not for everyone.