I've seen all three movies, and they are quite good. Although I had the same issues with language as you did, Princess. (Violence generally doesn't bother me too much)
After I first watched them though, I got really depressed. Solely because the movies have a plot that could easily enough be a true story. The manipulation of a person in such a way I found rather horrifying if I dwelt on it too long.
Getting past that however, I do enjoy the movies. The plot twists and the characters are varied and exciting. Plus, I love how Bourne is constantly trying to rectify the wrongs he unconsciously did in his past; how he tries to break from the mould people have tried to force him into. It is a fascinating story, and one that serves to go back and re-watch to get all the details out of.

The thing that I didn't like at times, was the handheld camera.

It tended to get a bit much in certain spots, giving me a headache, and I wished to grab the camera man and get him to hold the bloomin' thing still for five minutes!

(Although some may think that adds to the realism of it...

)
Anyhow. On the whole, I think it's a pretty good trilogy. It exists on our DVD shelf at least, and that's saying something.
