Scars Unseen
Hero
Fun fact: if you want to play a character that goes so completely against the norm that the rules don't explicitly allow it, you can still play that character usually if you talk to the DM and aren't using your idea as an excuse to intentionally break the power scale. "Hey DM, I want to play an orc that's noticeably weaker than usual. Can I give him a 6 Strength score?" is not a request a lot of DMs are going to refuse. Alternatively, don't use the ability score generation method most highly designed to avoid "unplayable" ability score results.So what? Is it not "logical" to have the possibility of an Orc/Half-Orc that has a once-in-a-million genetic disorder that causes them to be weaker than the average human, or as weak as the weakest human (8 with point buy/standard array, 3 with rolling)? How is that illogical or impossible? Again, the PCs are the exception.
Sometimes exceptions are made at the gaming table, not at the writing table.