>>509409570 (OP)It's fine to feel that way.
Now stuff it down, suck it up, and get back to being a father to the children you brought into this world.
This is what we've forgotten as a society.
You don't think people 100 years ago fell out of love with their spouses? Of course they did.
But did they whine about leaving because they aren't "happy" anymore? No.
Suck it up and deal with it. Strength in this life, happiness in the next.