BF time with the kids is often spent enjoying activities with the children. Versus have to be committed to one child's events while the other have to tag along,sitting idle. Majority of the events/practice that have to be attended are for the one particular child and BF finds out most often on the day of his visitation which has him altering his plans or the child missing out. This leads to how important it is to this one child.. Family First is important but is should include all the children.