creigs list advice?

I was looking around on creigslist.com when I came across this advice add:
Okay, so I've been with this guy for a year and a half and the whole relationship revolves around fighting...
Yes I know that sometimes it is me, but most of the time it's him not getting what he wants. He has the mind of a child and if it's not his way, it's NO way.
He's verbally abusive, controlling, very inconsiderate and diserspectful. He accuses me ALL the time over stuff I didn't/don't do. I don't know what to do?! I've tried leaving him plenty of times before but he always seems to wiggle his way back in. I'm just worried about losing our mutual friends that we made (since he made me stop talking to all of mine), then that will leave me with no one!
It's so frustrating, I don't know what to do anymore.
I know the best choice would be to LEAVE, but why is it so hard?
I'm not afraid of being single, I've come to terms with it and I think I'll be just fine without someone.
Maybe I'm afraid that I won't find someone in the future?
All my co-workers have these AMAZING boyfriends that bring them stuff at work, take them out, are constantly sweet to them....where do I find someone like that??
I don't expect the world, I just want to be treated nicely.
I have an amazing job and family and I feel everything else in my life is in place, EXCEPT him.
Any advice?!!?

And this is what I had to say about that:
This girl’s situation seems to be a very common one that happens to many men and women. I imagine that this women is too busy thinking about the good times that she and he have had and thinking to her self, ‘He can change. He can change!’ She is probably justifying his controlling ways by coming up with ideas like ‘oh it’s just because he cares’ or ‘its okay he says he can change.’ Honestly if a man is making a women get rid of all of her friends then he is truly controlling and she need to GTFO fast! He is trying to flex his power as a man. Putting her down or ‘mentally abusing’ her is a way of making her feel insecure so that she feels as though she needs him to make herself secure. I think that this man is a sneaky, controlling, manipulative snake. She needs to GTFO of the situation she is at all costs meaning that when they break up she needs to never talk to him again, simple as that. I know it may seem harsh but this kind of guy will take anything you give them and turn it back into a relationship. If she continues to keep this man in her life he will continue to worm back into her life. He will say thing such as “I will change, I promise,” “. . . But I love you. . .” “I’m sorry, it will be different this time.” “ I will get help if that’s what you want. I will do anything to get you back,” or he will continue to assault her verbally until she feels guilty and takes him back.
Keeping him in her life will only turn into a vicious cycle until something gives way and drastic will happen. The longer she stays with this man the harder things will be.
Let go now and GTFO!!!