That is something to be proud of, for sure. But you aren’t just a father. Is this why you are in this sitch? That you forgot to be a husband and your own person? I haven’t read your entire thread, sorry, but you need to be out there showing your W that you want and need adult relationships ,so go and interact with other adults. That could involve your daughter if you wish, like a playgroup, for example. But also think about what life will look like if you do split . You won’t have your children 7 days a week so prepare yourself now for how you might start spending child-free time. Your W presumably wants a man to shower her with attention, to put her front and centre. If she still only sees you playing the role of father she will never see that you are husband material.
No, it's definitely not why I am in this situation. My wife would probably tell you the opposite is true (I would not agree with her there). In fact, a part of me believes that some of the reason a divorce is attractive to her is that she would only feel responsible for our daughter half the time, and that is appealing to her. Of the two of us, I am definitely the one that kept up with my interests/hobbies after our daughter was born. I just had to adjust the time of day I was involved with those things. She on the other hand, did not just withdraw from me, but from most of her interests as well.
I am already just getting home in time to say goodnight a couple nights a week, so I like to spend time with her when I can. Sometimes, that involves taking her somewhere, but it just depends on how early I get home from work and if there is time before bed. There's more opportunity for this on the weekend.
I don't think my wife wants to be showered with attention, again, I'd say the opposite. She has somewhat of an avoidant personality.