Retreater said:D&D 3.5 is unalienable from miniature skirmish battles. You literally cannot play the game correctly without minis.
I play it fine without minis. We still use AoOs, flanking and all that good stuff. The difference is, we declare intent and have a social contract that says "don't fight over 5 foot squares".
Besides, dropping the grid and minis opens up a ton of possibilities in description, monster types and set pieces. Not to mention, the high level casters can actual get use out of their long range spells.