I hate reading spell lists.
As the 4e PHB and Martial Power are, basically, spell lists. It should come as no surprise that I haven't read the PHB and Martial Power cover to cover.
To a large extent, I'm puzzled why anyone would
want to read the 4e PHB front to back. The very thought is chilling, to me.

I'm a 4e fan, but that just sounds
dull.
Now, for 3e, I could understand that a DM would want broad competence about spell details, since so many monsters and NPCs referenced them. As a DM in 3e, I needed a lot of prep if the party was going up against a high-level caster or creature with insane numbers of SLA's. Memorizing spell details would certainly help on that count, although again, the thought of doing that freezes the blood in my veins.
But for 4e? As a DM, I'm not looking up monsters' and npcs' powers - they're all in the stat blocks. As a player, I look at the levels I'm taking and maybe one or two in advance.
Maybe some folks don't feel they get their money's worth out of any book - even a game book - if they don't?
-O