Thanks Ian.
The first year was not that hard, because (1) there were still course work and class, and no baby (2) I am a self-disciplined person and do not allow myself to withdraw without a series of battles...I think that is why I choose to quit only after 2 years.
Originally I thought I could go through the Mhpil for 3 months, but it does not seem to be the case now. My supervisors want me to target a high good journal as an end of it...I understand they do this because of their self-interest too, afterall they have invested all the effort and time in it.

Thanks for everybody's reply.
Here is my story.
(1) Why I join the PhD program: I have to admit that when I first joined it, I did not really have a strong desire to become an academia, it was just an option to me--go for job seeking, or another degree, I took the latter. I have no idea what PhD life would be until I joined it.
(2) Why I am giving it up: During the first year of my PhD, shortly after I joined in, I got pregnant and then gave birth my daughter. I continued it on a part-time basis for another 9 months. It was very very hard, everyday I feel sooooo tired. In the last three months, I lived on pain killers and other pills and my health was highly declining. If at the end of the day, I am certain that I would like to be an academia, I will carry on no matter what, however, I do not see myself with such a strong desire, so I choose to give up, for the sake of my own health, well-being and my family.
(3) My topic: after around 6 months in the program, I already feel that my supervisor and me share with different minds in research. He is, no doubt, a very smart and responsible supervisor. However, somebody is good does not mean somebody suits you. Now, at this moment, I just feel that, my passion towards the topic has lost so much during the procedure. It would be OK for me to work on the thesis for another 3 months for get the Mhpil, but another year, I could not image what it will be like for me.

For the above reasons I post this message here for ask for opinions.

Please anybody any comment is welcomed. I am asked to make a decision in the next 5 days!

I have known sb that after several years in the phd program, finally got Mphil, even after big correction. I already decided to quit the phd since I am a mother, no time and have no desire to be an academia.
Did your supervisors said anything?

I have been doing my PhD for one year full time, and another 9 month part time in a U.K. university, in the Business School. However, after serious consideration, I don't want to stay in academia anymore so I suggest to my supervisors that I would like to leave with Mphil.
I have already finished all my course works and training modules, the only thing missing is one final thesis. Originally I thought that would be easy.
However, my supervisors would like me to write an article in my topic and post it to a good journal, meanwhile produce a good quality thesis, in order not to be questioned in my viva. The problem is, I know my supervisors are very detailed focus academia and they would make this procedure very slow. In this case, even though I do not want to become an academia, in order to finish this final thesis, I might need to work another one year. I am self-funded student, which means that it would be another 7000 pound! In addition my supervisors strongly suggest me not to start job seeking before I submit my journal article and thesis!
I am 28 now, a mother of two, I really want to start my own career. If I do what they required, it might take me until 30 to find an enter position job. My ideal job would be a business analyst in the company, and finally have my own business. How much benefit will this extra Mphil will bring me？Btw, I have already got a MA in business study in another university in the U.K.
Any comment on this matter is welcomed.