Back when I started playing 20 years ago, most people I ran into were teenerage around my age. As the game has matured and the difficulty has increased, I’ve noticed most people I meet are much older. I’m 34 and I find most people I encounter are +/- 5 years from me.
I’m also sure that classic is attractive to younger people where as retail is attracting people my age. So I’m curious, what age range do you think is the most common?
1.) 10-19
2.) 20-29
3.) 30-39
4.) 40-49
5.) 50+
4 would be my guess. Many of us started in our '20s and are now 40+
People I run into in game:
Biologically 35-45
Mentally 12
I am an outlier.
I like your numbering system. What do you call it? 
I would guess most players are in 3 & 4.
3 MAYBE 4. Like late 3, early 4.
I’d guess that the majority of the player base is somewhere between 3 and 4, with honorable mention to B.
I’d have to say… 3.
Why did you start with A, B, then go into 3, 4, 5?!?
Probably 4. I’m in my 20s and I rarely meet others my age.
Poor 50 year-olds…being lumped in the same group as me.
← old enough to have seen the moonwalk on live TV…and I ain’t talking about MJ’s dance move.
waits now for replies from those so young that they even ask, “who’s MJ?”
MJ died in 2009, that wasn’t terribly long ago eh? Had to cross that concert off my bucket list though… 
2009 was fifteen years ago… 
Time isn’t flying by anymore. It’s blasting by me at hypersonic speeds.
Average Age: Ancient 
I’m in my late 20s and have 0 interest in Classic
Modern WoW is fun, though. I started playing during the latter half of BfA.
I’m curious as to why you think Classic is more attractive to younger folks? I see almost no value in it besides the nostalgia factor for the older players who were there at the time.
Careful, soon as you hit 30 you are ancient. 
“Hold muh beer.”
I must be dust then
Uh ohhh lol
I dunno I have a friend that says I was around when the planet formed. lol
Average is definitely 3
38 years old.