Originally Posted by Cassandra Cain
This is true. Even Christian Bale stated that Bruce was at a point in his life where he finally needed to move on, to live, and that he's missed out on so much normalcy. He's finally starting a real life, and embarrassingly late as well. Turning a new leaf and beginning a real adult life with someone in their late 20s is a perfect alternative, for Bruce anyway.
It is fitting, actually, considering how many people's life timelines end up. Your 20s are usually a time for exploration and making decisions about how to live your life. That's what Selina is doing. She's made the choice to break her cycle of crime and start fresh.
When you're in your 30s and 40s, that's usually the time for responsibility because you're either raising a family or preparing for your own retirement. Bruce did this backwards - he took on the responsibility of being Batman in his 20s and 30s, and is only really coming in his own at 40. Other people his age would be done exploring and ready to take on serious responsibilities, but he needs to go the other way around.
And yeah, it's better late than never. The true American dream, actually. It's never too late to turn your life around.