"I wear glasses, and I would like my character to also wear glasses because I do, and I would like to see a part of myself in this character."
It is a simple enough statement that holds a lot of merit, but having a character wear glasses poses one big problem. Leveling with glasses.
Glamouring your headpieces while leveling isn't exactly feasible unless you have money to burn as you replace pieces so frequently. So you have 3 options:
A) Go without.
B) Spend of a lot money.
C) Just wear glasses and screw using headwear.
None of these are really great solutions, but if we have a social slot for headpieces (like in Terraria) we can allow for more players to play as their bespectacled character unless having glasses can be done while wearing headgear (which would take WAY more work what with clipping issues and modelling).
Just a thought.