I have dabbled in woodworking. I still stick to metric. You can spend all day rationalizing why the system you've been immersed in since childhood is more intuitive. In the end, it's more intuitive to you because it's what you're used to.
Your example is a prime one. I'm not used to measure things with my thumbs, so if you told me that something is ten thumbs wide, I'd have to think some time before I could make a mental picture of it, and an inaccurate one to boot. I'm used to measure things with centimeters, so I immediately know what 10 cm looks like.
> Fractional centimeters aren't as intuitive to work with and conceptualize.
To you they're not. To people used to it, they are.
Your example is a prime one. I'm not used to measure things with my thumbs, so if you told me that something is ten thumbs wide, I'd have to think some time before I could make a mental picture of it, and an inaccurate one to boot. I'm used to measure things with centimeters, so I immediately know what 10 cm looks like.
> Fractional centimeters aren't as intuitive to work with and conceptualize.
To you they're not. To people used to it, they are.