Hi Zero, and welcome to Susan's... Dealing with parents is never easy. For that matter dealing with people is not easy either. When I was 19 I tried to come out to my mom. It didn't fly so well. I got the "Oh Ronnie it's just a phase your going through". Well here it is 35 years later and it is far from a phase. I realized at that point she would always denial about my sexuality and pretty much decided it was a taboo subject with her. I have to say now in retrospect I wish she could have accepted me. My father on the other hand was a lost cause and I didn't even attempt it. Both my parents were very religious and back then being gay/trans was not as socially accepted as it is now. Both my parent are gone now, so for me I guess I was a good son as they most likely would have been extremely embarrassed having a trans child.
I think the question you need to ask yourself here is who do you want to make happy, you or your parents and or other people. At this point specking for myself I choose me. I also think as one matures in life they start not worrying about what other people think. Just so you know that is not saying you are not mature it is just a fact about getting older.
Lets face it, being gay/trans is not something everyone will accept, even today. And people can be down right cruel. So this is not an easy row to hoe. Accepting yourself is however the most important thing of all. people will come and go in your life and as to your parents I can pretty much bet they still love you very much. As a parent I will say my kids are unconditional. I will love them no matter what. So keep that in mind.
As to you crying right now, I wouldn't say it's pathetic at all. This is a very emotional issue. I would be more worried if you weren't crying. In closing, my advice is keep trying to talk to your parents, and don't be angry with them as I am sure they love you very much. It's okay to be frustrated with them, but put the ball in their court and tell them you love them. With time they will come around, and if they don't it's on them and not you. Your the one that has to be with yourself day in and day out so be happy with you.