In time your daughter will realize that both her parents are lacking.
6 months?
Cry me a river, fish.
How long have you been married?
And you have been pregnant together, had a baby girl, walked the floors with her, suffered through teething together, watched your baby girl learn to roll over, begin to crawl, say her first words...watched her take her first steps back and forth between the two of you. You have looked into your wife's eyes and shared a look you can never, ever share with another person again - even if you were to have MORE kids...have you watched your little girl start school yet, fish? Has she drawn pictures of her family for her class? Are they pics of her with mommy and daddy on either side? Or will it be her and mommy in one picture and her and daddy in another?
For six years you have raised a little girl together. In six years people go through changes and they can get their heads turned around backwards. When that happens to one or both of you, the one that seeks to save the marriage bears the biggest burden. That why I think it ends up on the shoulders of the spouse that has the most potential for strength.
I don't think you're through.
But you can certainly quit.
And just so you know, it's fine if you want to bitch at me. I don't get offended easily.
So long as you don't mind being kicked around on the pier a while.