Learning how to draw block letters is essentially learning how to do hand lettering. Most graphic styled lettering uses the principle of block lettering. When drawing letters and figuring out how to give each letter more body and width, using the block lettering method can assist you with that process. Mostly, block lettering is a skill that gives you foundational knowledge for hand lettering. So, the main purpose of block lettering is learning how to give text body and how to do that using a specific block lettering method of writing and outlining a text. This can be a principle that you apply to digital design, graphics, hand lettering, and artworks that include drawing letters. It’s a great skill to have as an artist and as someone interested in text-based artworks.