Go fuck a goat with the major modes, it is not like there are any different scales to chose at all

Yeah, you definitely don't understand how modes and scales work, if you just wrote off the whole foundation of western music.

melodic minor or mixolydian B9b13, Those I use pretty often

No you don't. You're saying that to save face, sound educated and interesting. If you don't know how a mode works, there is no way in hell you are doing anything with an altered mixolydian scale, besides memorizing it with no control over it. You wouldn't even have a clue how to write a progression so you could play over it, without a STRONG understanding of modality. Let alone a, wait for it... mode of the Harmonic minor scale.

too exotic for you arent they

Lol, I have years and years of music schooling since the age of six and now two years majoring in music theory, with an emphasis on jazz guitar. Yes, those are too exotic for me. You got me.

Why should you play over changes

Seriously, what the hell do you think a mode is? Do you think they don't switch in music? What music are you listening to that has all of these changes, that you think doesn't or can't happen in modal music? Joe Satriani is the king of modal rock and Surfing with the Alien for example starts out in G Dorian, then bounces quickly into C# Phrygian, then Phrygian Dominant, then a G major scale, before smoothly wrapping back into G Dorian? Hardly sitting around not changing on anything for 16 bars. Actually qute the opposite. Modal music gives you such a large pallet of colors to paint with, that if you're playing the same thing over and over without changes, it's not the modes. You are a boring fucking player. Much like you are an illiterate fucking "musician". Go write a sad song in Mixolydianb9b13(usually called Phrygian Dominant, but hey, your way sounds more complicated and deep) about what a fucking moron you are, and make sure to write the bridge and outro using your extensive knowledge of the melodic minor scale.