According to Erich Fromm in his book The Art Of Loving, love isn’t something random or easy-to-get. Realizing one’s loneliness in the big world, people seek to connect with somebody who would always understand and support. These questions can unite even extremely different people because analyzing the most important life values increases intimacy.
Try the experiment with your partner. If you don’t have one, don’t worry! Owing to these questions, you can easily get intimate with whomever you like. Besides, when you really try to answer them for yourself, you can re-evaluate the entire life. What can I say, psychology is mysterious sometimes and makes miracles happen.