>>149125986 (OP)The simple answer is that comic artists and writers lack the creativity to remember that their characters are wearing clothes that can be torn.
When they think up a fight scene, all that goes through their head is "character A is fighting character B in location X" But they cannot visualise any deeper than that. They cannot imagine the reflections in the windows, the feeling of the stone floors, the sun in their eyes, the height of the ceilings, etc.
It's not that they're chosing not to draw ripped suits, it's simply that they haven't even thought of it