A few months ago, I asked my 5-year-old boy if he wanted to read one of his many Thomas the Tank Engine books at bedtime, as has been our usual custom for the past couple of years. “No…Thomas is for babies.  Let’s read this Teenage Mutant Ninja Turtles book!” he said.  My heart sank.  Putting together train tracks on his bedroom floor, watching the old Thomas episodes on Netflix, and helping him into his Thomas pajamas nearly ever night have been my “go to” father/son shared activities for…