// Spoilers for The Interviewed: An Interview with Ennard: Again
After thinking about this episode for a while, I couldn't fully understand why Springtrap would pick some random guy he basically just met over the slim possibility of seeing his daughter again. Yeah he says he has moved on, but there has to be more reason than that, especially because of how tempted he looks when baby was revealed to him. Then I realized that the reason he chose to help Bloke was because he was literally the first guy he had a proper conversation with in 30 years. Yeah, he's talked to other people like Major and the kids, but it was always with the intention of killing him or getting something out of him. With Bloke, it was just a genuine conversation with no real intention behind it other than just to understand what's going on better, and it even gets a little personal with Bloke asking him what it was like to have kids or if he's had any. It may sound like just a random conversation to anyone, but for Springtrap, this short but sweet interaction was probably extremely refreshing. To finally have a genuine conversation like this after so long must've meant so much to him, especially after he had lost essentially everything he had ever cared about. It was just a small reminder of what it truly felt like to be alive.
In the end, this is just my two cents of the whole thing and how I've interpreted it. But as you've read, what seems like a small amount to you can be worth so much more to someone else. I hope you've enjoyed reading my little observation. :]
TL;DR: Springtrap's short interaction with Bloke probably meant way more to him than you think, and was likely the main reason he sided with him when faced to choose between him and the possibility of seeing his daughter again.