Not just store aisles, but sidewalks and stairways too. I mean, sure they might not know someone is behind them who wants to pass them, but even when they can SEE with their eyes someone in front of them going in the opposite direction, they still do not make way for them. Ridiculous how they think everyone should make room for them just because they're huge and no one wants to accidentally touch them. They should be the ones making room for others.