For those who have adopted kids -- or know someone who do, this came to me from the sister of one of my first readers (and now dear friend). Of course, feel free to share with anyone you think needs to hear it:
Brad... my sister is in the process of adopting, and had this conversation with her 4 year old son today (who WILL be getting a copy of your Heroes!):
This morning I was driving Nathan to daycare and we were talking about Batman and Spiderman, as we so often do. He asked about what happened to Batman's mom and dad. I told him that Bruce Wayne's mom and dad had died and that Alfred had helped raise him and stayed with him. He asked about Spiderman, where were his mom and dad. I didn't know but that Peter Parker was raised by his uncle and aunt. And while I was prepared to launch into my favorite "all families are different and as long as there is love its a family" schpeel that I love so dearly, Nathan had his own story to tell. He told me that this would be just like for his new sister. That we aren't her first family but that she'd come live with us and we'd love her forever like Alfred did for Batman. He says he will tell his big sister all about Batman and how families can love you and make you a superhero even if you aren't there as a baby first. Yeah... we're going to be just fine.