A Christian Science perspective.
The best Father's Day I ever had while I was growing up was a Sunday that started out with breakfast in bed for my dad. My brother and I assembled assorted items on a tray, including some powdered, instant orange juice, and happily served it to my father, who obediently consumed it all.
After church, we headed down to the beach as part of our Father's Day celebration. My dad worked hard Monday through Saturday, year after year, getting up before we all were awake in order to make his long commute. So, as soon as we arrived at the beach, I knew he just wanted to sit still, rest, and maybe read. But after my brother and I started playing catch with a baseball, we pestered him to pitch to us. So he gathered up our stuff and took us to a nearby high school and pitched batting practice to us for hours.
Now I'm a father myself – in fact, my kids are grown. The father/child relationship I have with my daughter and son brings such substance to my life that I can easily understand now why my dad would walk away from his comfortable beach chair to exhaust himself on the pitcher's mound that day. To be a father is a great joy.
I think lately I'm understanding more about why this is so. God's fathering is so constant, so wonderful. Our Father is the source of spiritual, useful qualities, such as joy and strength – and, especially, encouragement. These qualities are available for me, and for anyone, to express anytime. "Every good gift and every perfect gift is from above, and cometh down from the Father of lights, with whom is no variableness, neither shadow of turning," says the Bible (James 1:17).