What are the consequences of telling your parents that you are GAY?

While I support homosexuality, I think if I had a child, he said he was gay I would not be able to accept it, after all, is their own hard work to raise children, and the previous generation of people thought feudalism, homosexuality should not be much of that time, it should be difficult to accept the occurrence of their own children, right. There is another problem is that parents want their family can continue, because of sexual orientation problems you can not have children, I think parents are also very difficult to accept the future can not hold grandchildren and so on, but I think if you have siblings should be better, I have a few children, one of them is gay or acceptable. Or you can tell your parents about you and your boyfriend, how you went through all the trials and tribulations, and so on. And if you do decide to talk about it, just say it, and then see them again after a while, so they can digest it, and then you can talk to them about your future plans and so on. I hope to adopt~