21 year-old guy and I cry way too easily?

I have always been an emotional person. I remember when I was 13 and I saw Cast Away for the first time, I had to keep myself from bawling and embarrassing myself in front of my parents. I can even watch an inspirational TV commercial and be moved to tears. Last night I was thinking about visiting my old elementary school and I cried for 10 minutes thinking about how my life has changed.

Being a guy I find this embarrassing but have always thought of it as a strength, but I still try to hide my emotions, and I often get angry over alot of pointless things. Recently I have been unable to control it. Can anyone offer some sincere support or thoughts? And is my personality most likely a turn-off among women?