It is usually a cost vs. function problem.

Humans are generalists (good at many tasks) but when you are designing items for profit it is cheaper to design things for specific purposes.

Think of it this way,

It is easier to design a separate washing machine and separate baseball bat than to design a device that can do the purposes of both.

Thinking of "humanoid robots" like Data in StarTrek we usually think of . .

• human form (bipedal balance is hard, human like dexterity is hard)
• human speech (ChatGPT runs on insanely expensive hardware)
• Can pass the Turing test for AGI.

All of these are not yet possible