1.) I prefer shopping in supermarkets because there are more things to buy there. There's also more customer service. Security is better as well.
2.) Sometimes I can't find exactly what I'm looking for in a small shop. Then I have to go to a bigger store anyway. Plus small shops charge more for certain items that you could get cheaper in a bigger store.
Deja vu is when your brain tries to understand the situation youre in by compairing it to other memories you have making it seem like you've done that something before.