A fish that big is better off let go. Keep the smaller ones and let the big ones live to fight another day. Big blood is the future for your kids to enjoy.
I'm not trying to pick a fight, but over the years I have heard too many people push their ideals on another person about what they should or shouldn't keep... it gets to be a similar argument of what size of deer to shoot. I agree it is nice to see big fish returned to the water, but how many of us want to be told what we should or shouldn't do, even when the words are spoken with grace.
I think the best way to involve novices and perpetuate the love of fishing is not to impose our opinions on their actions, unless it is affirming. I say if it is legal, then nobody should feel guilty about what they want to keep/take. (Again, I'm not trying to pick a fight; I'm just hoping to raise awareness for the mind of those in the earlier stages of our pursuit.)