Hi, I felt the same about few years into my marriage, after our kid was born. He was a changed man and we started to drift apart, and he made no attempt to improve the relationship.
Now that 2 years after divorce, I m beginning to feel happier, although I will b raising a kid on my own. Better than quarrels, crying, and having our kid witness all these in the home. Since he everything want to equally split the cost and being calculative, it is no difference. Might as well divorce and state everything out clearly.