As a father who has been through the divorce and custody process personally, this is an issue that is very important to me. The court system is still stilted in favor of mothers, fathers still have to justify why they should have equal parenting time, let alone the majority of parenting time even if they were the primary caretaker of the children during the marriage. As a father of three children and step father to one, I have a unique perspective as to what it means to be a father and not be able to see those that you love most in the world every day. I can tell you from experience that I personally had to fight (and it was a long fight) to have 50% of the time with my oldest daughter.
I know what it means to be intricately involved in your child's life, sign them up for daycare, bathe them, dress them, put them to bed, take them to and from daycare and still feel like you have to "prove" that you are just as much a parent as mom. That you are a good dad worthy of being at the very least an equal parent with your child's mother.
Now, I will be upfront, not all fathers deserve equal time or the majority of time with their children and it would be in the best interest of their children to spend the majority of time with their mother. But mothers should not by default be given the majority of time with the children either! Unfortunately, too often that is how the court system views father’s rights and who should have custody.