She wants more of you for the kids
A very common complaint among wives is that their husband does not spend enough time with the kids. Also common are complaints about him being too hard on the kids, not knowing them well enough, just playing and leaving the discipline to her, and contradicting what she has told them to do. Frustrations over parenting are a common source of marital problems, and it’s an issue you would do well to address.
I suggest you spend time talking about this with your bride sometime soon. Work to get on the same page; it may take some real effort, but your marriage and your children will benefit. Be ready to bend a bit – being of one mind and acting in unison is very important here. It’s great if you see all parenting issues the same way, but if you don’t, please don’t ignore the differences. Find common ground you can both live with.
Beyond the marriage aspects of the issue, let me encourage you not to slack off on parenting. I’m sure you have heard how your kids will be with you for such a short time, and how you have even less time than that to teach them those important things that only you can teach them. Its cliché, but it’s true. You don’t get the early years back, and you don’t get a second chance to influence them when they are young. You don’t get to take a second run at their teenage years either. You get one shot, for better or worse. While it’s true that things beyond your control will shape your children, you can have a significant impact on who they become, what they think, and how live they live. It’s both an awesome opportunity and a terrifying responsibility. Every parent makes mistakes, but those who try hard do far better than those who don’t. Man up and be the father they need.