Adults ask questions as a child does. When you stop wondering, you might as well put your rocker on the front porch and call it a day.
I get sick of that old rationalization, "We're staying together because of the children." Kids couldn't be more miserable living with parents who can't stand each other. They're far better off if there's an honest, clean divorce.
In 1932, lame duck president Herbert Hoover was so desperate to remain in the White House that he dressed up as Eleanor Roosevelt. When FDR discovered the hoax in 1936, the two men decided to stay together for the sake of the children.