This is somewhat influenced by the beard thread. At the suggestion of my wife, I started growing my hair out about 3 years ago. It had never been longer than past my neck. Here is a pick from 4 years ago or so when it was still short.
What you see in my Avatar pic here is basically how it is now. And I much prefer it. I just have to throw it back in a pony tail and go. Don't really have to worry about combing or styling. The only draw back is if I have it down and it gets really windy or hot. Comes in handy in the winter! Actually there is another more minor drawback in that sometimes when it's down people mistake me for a girl from behind. Especially at restaurants when a waitress approaches from behind. One time my wife and I were sitting on one side of a table and a couple friends across from us. The waitress comes up to take drink orders. Looks at our friends first and takes theirs. The says "And how about you ladies..." and then looks and realizes I am a guy. My friends ROFL'd for about 5 minutes. The lady immediately apologized. I just laughed and took it in stride. I was real skinny in high school so I guess it's a good thing I didn't have long hair then.
Anyways, let's hear from the headbangers, hippies, and country boys, and anyone else that's male with long hair.