That must have felt nice. Here you were imagining he had no feelings for you and wasn't filing because he was lazy, but he said he doesn't want to D.
I think you did fantastic holding up boundaries with him and keeping things breezy and nice. You should feel really proud of yourself.
I have no 2x4s for you. Just keep an eye out for your well being, because you are your priority.
I understand the worry about friends and family. I would just be open with them and say "I'm sharing this with you because you are important to me and I want you to know what's going on. I know you might not be happy about it because you worry for me, and I appreciate it, but I've got my wits about me and I'm being very sensible. I'm just not sure I'm done with the marriage. I'll still be protecting myself, I promise you that."
Anyone who loves you will support you if you are very clear with them that Leahsue is no fool. If someone still gives you a hard time, either stop opening up to them (without saying anything), or say "I'm disappointed. I know you may not agree with me, but I'm not looking for agreement. I'm looking for support. If I can't get that from you, that's okay, but I won't want to talk about that area of my life anymore."
I think what you did was very sensible, personally.
