First, ignore anyone who tells you modes are anything but incredibly useful.
Originally Posted by Raylai
Do you guys EVER intended to write melody with "mode" (Dorian...Lydian.. Etc) concept?
You have to understand that modes are entirely conceptual, and as such, entirely wonderful for songwriting/melodic experiments.
However, you'll need to develope your own feel/emotional resonance to the intervallic relationships that give each mode its own color, so it becomes instinctual instead of academic.
One really fun exercise that can foster this development is to take a melody and/or a chord progression and figure out where it's coming from mode-wise, then, keeping whichever note you consider the root constant, alter the rest of it to conform to the intervallic relationships implied by the other 6 modes - so you end up with the original and 6 variations. If you're really adventurous, you can branch out into non diatonic 7 note scales (e.g. harmonic minor, melodic minor) giving even more variations and colors.
It's a blast, and the potential for combining and recombining ideas and experiments are limitless.