Agree. Or you could think latterly and use the constraints of the type, materials and machinery you have as a virtue. After all digital gives use everything we could ever want and constraints can go out of the window unless we are disciplined. But with letterpress there is no such thing as infinite. No press room will have all the type in all the sizes. I personally constrain myself with my letterpress practice. At the moment I am restricting myself to printing with just one block, and using different colour schemes and permutations to come up with unique designs.