I'm not going to say this guy it too old to dress up as Batman. Really, I understand much of the fun of dressing up in a costume is that you can pretend to be someone quite unlike yourself.

On the other hand, if you're forgetting to put on your boots, gloves, and utility belt and can barely manage to wear your mask straight enough so that both eyes are looking out of the eyeholes well... maybe the problem isn't that you're too old to play Batman so much as it is you're too old to live on your own anymore.