We can tell from the tone of this writer that he/she really appreciates letter writing, as opposed to typing. Essentially, it's saying that when you handwrite something, there's an intimate component to it that makes the piece of literary work feel totally your own. This is opposed to the mechanical feel of typing, where everything is one font and you're simply clacking out the letters. Instead, with letter handwriting, you're slower at it (because handwriting something is quite slow), which allows you to enjoy your writing a little more and "smell the proverbial roses" by including little details here and there that truly make the piece a very self-connected one.
