What Level to Start an Alt?

[bigjeff100]

I have 3 toons.
-Took my first toon, from 1-60 (Druid)
-After first toon hit max level, i made a 2nd toon (Currently 56 Warrior)
-Created a 3rd toon after warrior hit 50.. Could no longer play the warrior much due to time/family/work aka life.
-Created a 3rd toon who i can play that won't rely on entirely on groups. (20 SK)

I think the best thing to do is have a toon for all occasions.. A group friendly toon, a solo friendly toon, and one that is flexible for both.