People who play a Titan are nice because they are a huge support character, and people usually play the character in-game that they relate to in real life. On my friends list, people who are very supportive and nice play a titan. The guys on my friends list who are kind of loners or have a "my way or the highway" kind of mentality are hunters. Guys who are warlocks are weirdos. It's true. Just look in the mirror. :)