Am I the Asshole?

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The original was posted on /r/amitheasshole by /u/No-Philosophy6574 on 2024-01-22 01:47:04+00:00.

I (m33) didn't meet my biological father until my early twenties. He left when I was young and I don't have any memories of him from that time. Our first meeting as an adult was messy and I didn't really have any interest in keeping in touch. A few years later I got a message from a sibling (f36). One of his kids that he also wasn't there for. She's nice and just wants to to connect with our father and myself. We got together a few times in the beginning. I stepped back after realizing our father was the the only reason we were speaking.

The problem is I don't view my biological father as family. If I'm being honest I don't really have any respect for him after meeting him and hearing him out.

Two weeks ago my sister reached out and wants to get together. I know our father is going to come up and I know she wants this family idea. She wants a dad and brother and a family bond.

AITA for not wanting to put the work into building these relationships?