Question: This applies to all 3 films. Wouldn't someone eventually see Spiderman coming out of Peter Parker's apartment and put 2 and 2 together? Doesn't this seem just a bit careless on Peter's part?
Chosen answer: Answered in the comics: Peter's Spider-Sense tells him if someone is looking when he's about to enter/exit the apartment as Spider-Man.
Answer: The problem is that this is not explained in the film, unlike explaining mistakes in films with books, even though one work is different from the other.