My two cents on WoW,
I left EQ for WoW for about 2 years.
You can AFK at a moments notice in WoW when solo for the most part without fear ( unless perhaps on a PVP server )
Downtime is almost non existent, appropriate level food / drink will restore you to full hp / mana in 30 seconds.
Death is painless in WoW, corpse recovery is painless.
Any class can solo to 70 relatively easily.
PVP does allow for an alternative progression to raiding for gear, but it is a huge time sink.
Tradeskills are worth doing for the most part.
Quests are worth doing, both for rewards and for meaningfull experience gains.
The game is almost stupid easy with regard to information, Blizzard actually supports limited scripting and UI enhancements ( custom UI components that make repetitive tasks / targeting / casting much simpler than the base UI, and usually the good ideas players come up with regarding UI enhancements end up migrating into the official UI over time ) Mouseover items etc gives you solid in game information including damage per second info on weapons etc.
You can't screw up a quest in WoW, it won' t let you hand in the wrong items, or eat 2 of 3 from a turnin because you haven't got em all on you, they quest related mobs simply won't allow you to, quests are for the most part clearly spelled out including where to go what to look for etc, auto updates as you go all in game.
Modern web info for WoW is vastly superior than EQ - check alla's site as an example, any mob in any zone includes dropped items AND drop rates on all items that mob drops, any quest is outlined in very good detail.
You can literally log in an see character progress at any level from 1 - 70 within a small period of time ( even an hour ), either through exp, skills, quests etc.
Eventually you will hit a point where you either live in PVP battlefields, or you will need a larger group to take on raid encounters to progress with gear.
There really is little difference between Alliance and Horde other than flavour of home cities and zones, Horde cannot speak or deal directly with Alliance other than through neutral auction houses, and killing each other in PVP ( unlike EQ where dark elves can mix with high elves )
Though the first 60 levels are fun enough, most of those zones are nearly empty since the burning crusade, and sometimes doing some of the quests is a bit of a challenge for lack of bodies in the right level range - but none of the quests are really neccesary. Once you enter the expansion zones within a pretty short time expect your mana / hp etc to double with new gear available in the BC zones, even from solo quests.
In short its a much more relaxed environment to play in, its stupid easy to progress from 1 - 70 even solo, right up to a full set of Epic / Purple gear ( tradeskilled gear / world drop items ) - but to go beyond you either need to put in a stupid amount of time PVP'ing, or get into end game raiding with a larger group.
I left WoW when much like EQ most of the folks i knew left the game and progress wasn't possible without company.
Retired level 70 Warlock and 70 Priest left rotting in Azeroth and I returned to Norrath and rolled up a bard.