Hi Ahmad,
If I understand your post correctly, I think you've hit it on the head. Most of those who study biology - and especially biological evolution - aren't concerned about where the first replicator came from. Only about what happens after. Before life arose, everything was chemistry. (And many of the biologists I know literally
loathed organic chemistry courses
- although not a biologist, I include myself in that number). So in essence, you're right. Evolutionary biologists aren't that interested in abiogenesis - and it really doesn't matter for their understanding of the rest of natural history.