[stevekemp]

I suspect, for many, that implementing a forth is more interesting than using a forth.

Once you start writing really complex programs the system gets painful and hard. But trivial things are easy, and the consistency is so appealing.

[pjmlp]

It is the bootstrap that makes it interesting.

Creating the required primitives in Assembly, and then the remaining userspace out from them.

Afterwards it is programming like most languages.

I have done it with Lisps though.

Also on 8 bit home computers it provided the feeling to be coding close to Assembly while being close enough to BASIC as high level language.