I don't usually pay attention to age
This
I don't really have the problem your talking about... But at the same time, I have like 3 layers of friends; best friends that I would kill a bitch for if they threatened one of my bros; friends who ive known a while and would probably stop to have lunch with them of I saw them IRL, and friends because ehhhhh he's nice/funny/talented/usefull.
Tier 1, everyone is 16-18 (JazZ, Thorfin26, Sagacity, Myself and a few others)
Tier 2, ranges from 12-16 (no names huehuehur)
Tier 3, 10-14.
Either way, all three groups can act maturely or immaturely as they see fit. Cromedome has this cousin of his, he's 12, forgetin prodigy honestly, he makes me look like an elementary schooler: he's more mature than 90% of the people I know on blockland.
It all who you know I guess.