Beautiful post!
Yes, most people ARE indeed nice. It only takes one person to politely start a conversation, and most people will react well and open up. I randomly initiate chats with people every day, and have always had positive responses. It is almost like EVERYONE wants to be nice and chat, and it just takes one person to start the ball rolling.
The JW indoctrination made us think that all "worldly" people were evil, or out to get us. Or that they were not nice.
The reality is opposite.