Absolutely appreciate the desire to play an imagined person. Remains unclear why significant career choices post chargen are in conflict with that?
To be clear, I want to be the one who decides my character concept, in the way that makes sense to me.
I dont want someone else to decide for me. It is my character. Not theirs.
When my Eldritch Knight masters wizardry and warfare, the concept is a cultural fusion that the character grows up with.
The "gish" Wizard/Fighter has been the core part of D&D since the origins of D&D around 50 years ago.
The High Elf was earlier a single class that is simultaneously a Wizard and Fighter.
In 5e, the Eldritch Knight inherits this elven gishy D&D tradition. It is quintessential D&D.
1e established the High Elf as a gish. 1e established the Githyanki as the namesake "gish".
Many D&D players have been calling for a well-designed Wizard-Fighter playable class.
The Eldritch Knight must work well from level 1 as the Wizard-Fighter tradition.