Are we picky when it comes to relationships? Or is it really preference?

Loving someone, or liking them for that matter, is something that can not be determined by one person, both of the people need to have that feeling. You are right in saying that no one is perfect because no one is but the key to loving or liking someone is knowing that. The people that look at the positives don't know themselves well enough to even be in a relationship, like I said before it takes two to be in love. If a person only looks at the positives and over looks the negatives that ALL people have, then they will be doomed in that relationship, which probably explains why 50% of first marriages fail. To know true love with someone a person must know who they are and until then they will not be able to find a relationship that is worth while to them.