Since we re talking about Thomas and Martha, i always wondered what they'd think if they saw what their son has become. And as if my prayer was answered, they did a story about it. Let me tell you about it since its one of my favourites.
Its a canon story called "
Batman: Death and the maidens". Ras has exhausted his Lazarus pits and he asks Batman to let him use the last remaining pit in Gotham in exchange for giving him a magic potion that will allow him to meet the spirits of his parents. At the same time Bruce catches himself not feeling pain about his parents, in fact he barely remembers their faces. That is why he feels like he needs to meet them again and so he uses the potion. Of course he is skeptical about keeping his part of the bargain and letting Ras use the pit. In the end Ras dies because he is murdered by a daughter of his that he had abandoned to the Nazis. The story ends with said daughter assuming the mantle of the Demon's Head, but they never did anything with the character since Morrison later brought Ras back to life.
Anyway, Bruce uses the potion and his spirit meets those of his parents in Crime Alley. His father isnt there at first, so he takes a long walk around Gotham with his mother. They talk about many things but Martha is very cold towards him. When they return to Crime Alley Thomas is there but he doesnt want to speak to Bruce. Martha explains that its because they are both disappointed with what Bruce has done with his life and that is why she was cold towards him. They tell him that he no longer feels the pain and that they want him to be happy. He could easily have become a doctor, a scientist, a president and help just as much, if not more. Here are two amazing pages from it (just imagine Barbastella playing as Bruce transforms into Batman):
The meeting ends with his parents asking him to move on. He wakes up confused on whether he was having a dream or really meeting his parents and what the latter could mean for him. And then Alfred sets him straight:
Its a very good story about Bruce meeting his parents and i highly recommend it.