Thats a ton to quote and it sort of jumps around a bit, let me answer in paragraph format ...
I would LOVE to take her out more, but she doesn't want to leave. She's always got a headache or moping about something. She just started seeing a therapist for depression but she's denied it for years. Obviously the beginning of our relationship was awesome, like most. I wouldn't have married her if she was like this. She was always an introvert but she was never this isolated. She had friends, we all went out, we had a blast together. When I asked her to maryr me I imagined kids with a babysitter, going to the city for dinner and a night out. Maybe one weekend we go up to the cabin with some friends, even bring the kids. But she doesn't leave the house. I made reservations two fridays ago and she bailed because she said her stomach felt funny, its always something. She swears nothing spurred this and nothing is wrong but it was a gradual change over about 4-5 years and now she's socially isolated. No one moment, just a gradual change. Hopefully the therapy helps but she refuses to acknowledge theres anything wrong. With her or our marriage.
Sex therapy? haha I suggested that and she went from blushing teenager to angry mob wife to insulted debutant. Again, she acknowledges its unusual or shes become different but she doesn't view that as a problem. So the couples therapy was pointless. We ended up talking about her mother half the time. And she said she felt uncomfortable and eventually started making excuses to not go which is why it ended.
As for the divorced crew its a bit of a mixed bag. One was cheated on so I take his "advice" with a grain of salt, he likes women about as much as Mitt Romney (I kid). Another married a high school frankenstein that he always hated, but she ended it, too. Another cheated on his wife, she caught him and left him. He was miserable for months. Then the associate types are a mixed bag too running the gamut from bored housewife strays to whatever I don't know everyones story. As the other kid pointed out I;m not the only guy on the planet who was with the same person for over a decade, got married, had a kid and is looking to stray for whatever reason. But I promise there is nothing "easy" about this way out. Aside from a massive financial loss, I'd have the priviledge of going to bed every night wondering if I turned my daughter into a man hating lesbian.
I'm not making excuses for myself and this is not an easy decision. I'm just trying to get varied perspectives.