This baby will be the end of my marriage.

This is my final child. I am done having kids. I am done with all the crap my life is. It seems the older I get the more crap I have to put up with. I'm done giving my all and getting nothing back. I don't think my marriage is 50/50. It's 50/.2.  I do everything and for what. Being lied to ignored and cheated on. I don't even enjoy life anymore. Nothing matters. I just want to start over. I'd even give this child up for adoption at this point. It's all just too much. I am seriously at my breaking point in it all.