I've noticed a pattern in my long-ish term relationships with women. There comes a point after we've begun to seriously bond when they suddenly become very unhappy with me and the relationship and feel that I should be doing a lot more for them. I'm a very busy, ambitious, active person, so I totally understand I don't have a ton of time to spend with a significant other, less than ideal for sure, but it's not like I'm off playing video games, drinking with buddies or avoiding my gf, etc. I'm genuinely busy with work, school, exercise, whatever, and I do make a conscious effort to be a good partner and spend quality time with my gf when I have one. However, even in the two cases where I devoted a great deal of time and effort into the girl, even to the point that I was told by many others that I was WAY above what most guys do in relationships, the girl still got really upset at some point and basically threw a tantrum about how I don't do enough for them. In both cases I listened to their claims and considered them the best I could, but really no matter how much I tried, I could not see their complaints as anywhere close to valid. I objectively invested much more into them and the relationship than they had.
My own experiences have been echoed to me by other men I've talked to about this, and considering 70% of divorces are initiated by women, it makes me wonder if this isn't just an inevitability, that at some point women are going to get upset about their man not being the ideal fantasy they have in their head. Any input?