Why do we have modes?
It just seems unnecessarily confusing. Why not just use Roman numerals instead? At least those are related to what's going on in the music. Number IV is the fourth note in the key, and you can then see that note as the base point of a scale set in that key. The scale of the iv in the key of G will start at C, and it'll have a sharp at F, I remember my FGCDAEB, I know what that looks like. It's simple, elegant, it makes sense.
What the fuck does C Lydian look like. What the hell does that tell me about the scale. It doesn't tell me the accidentals, it doesn't tell me about the consonance of the chords. Except maybe now I know this scale will make me feel like a citizen of the ancient Greek kingdom of Lydia?
And the thing is that a lot of teachers and online resources see them as different things? Like all of the charts online expect you to memorize the exact Roman Numerals of each chord for each mode, and then they expect you to memorize the whole step whole step half step shabangle for every mode. That's what my teacher had me do for CM; she had me memorize the exact whole step whole step half step thing for every single mode.
We just have so many things relating to the same thing, the position of the note in a scale. Roman Numerals, Modes, Degrees, and minor scales (Like why not just call the minor scale, the vi, the submediant, or the Aeolian, why is it fucking special). There is just so much redundancy and added complexity to something that really shouldn't be that complex.
I will concede that degrees are somewhat useful in a descriptive manner. The dominant resolves to the tonic, above the tonic is supertonic, and in the middle is the mediant, this all makes sense, and maybe it has some use. But I see no reason for the existence of modes. Or maybe I'm missing something.