I enjoy having multiple characters to play. I tend to have my main main which is my rogue (1st character I ever created) and that doesn’t change. My 2nd main has changed every expansion. I tend to have an alt that I work on to the point that it is almost as geared as my main. She’s the one I turn to when I’ve “finished” with what Book can do for the week. Also I enjoy being able to fill a different role such as healer or tank if needed. Many people know they can whisper me & I will have a decently geared alt I can bring to a run.
In Wrath it was my DK. She was the easiest to level. Ulduar was out before my main hit 80. Yes, I was a Wrath Baby. I used to sub in my DK for the ICC bosses that I needed nothing for my rogue on in the guild that I was in. My warlock also got to level 80 & saw some action in ICC, but it was usually my DK I turned to first if I couldn’t take my main. Actually the funny thing was my DK ended up getting Kingslayer because my rogue was locked to another 25 man instance. My rogue never got Kingslayer until she was 85. Also my DK ended up with the shirt from Precious. Normally, I just rolled greed if any main wanted anything because she was an alt, she just took the leftovers. But there was this one rogue in my guild I didn’t like. He came back near the end of the expansion and wanted to main a rogue instead of leveling his level 70 warlock. So the guild leaders (friends of his) power leveled & power geared him by running older stuff. Yes, I was jealous I had to suffer through pick up groups and work and get geared up by myself and earn my raid spot (some begging may have also been involved) and it seemed to me he just waltzed in and was grabbing up all my gear. Also didn’t help that the other 2 active rogues in my guild didn’t care for him either. Anyway, back to Precious’s shirt. When it dropped I was on my DK and I saw Disliked Rogue rolling need on it I didn’t want him to have it. So I rolled need and won! She’s been wearing that shirt ever since.
Cataclysm saw my second main being my Druid. I had changed guilds. In my new guild I was running in the “alt” run with my rogue. But this left me Monday thru Thursday with nothing to do. So I sort of started running Firelands with my previous guild. The guild leader liked the buffs the Moonkin brought so I found it easier to gear her than my DK or warlock (warlock then was mediocre dps . When my main got asked to apply for the main run which was the same days as the guild I was running with druid, I presented the alts I had available for the alt run and my druid was chosen to replace my rogue in the alt run. So needless to say she was my second alt through most of Cataclysm. She did quite a lot in Cata as she was almost fully heroic geared by the end of Cata and had downed everything on heroic except Spine & Madness of Deathwing.
For Mists of Pandaria, I changed guilds about halfway through the expansion with my main. I again let my alt run leader pick (different leader). I had my druid, paladin, and priest within about a 2-3 item level range. And since we didn’t have any plate she picked my Holy Paladin. Also it allowed her some versatility as she is a primarily a healer and secondarily a tank so one of those 2 hard to fill roles get covered.
So the DK is now an alt, the druid is now an alt. Along with the warlock (who has been stuck as an alt despite being my 3rd at max level).