well, the e e cumming style make sence back in the days of dummy terminals, with teletype machines, and haveing to know things like ascii code 16(no, that wrong, what was bell again?) if you wanted to have a "ding" noise.. or even CR (carriage return was a bit of code you had to know, and enter.. shift, and puctuation were just too much!

now days, you can write and edit in a word Processor, and have it auto forward to your email program so it might seem out of place.

but many computer conventions became established eons ago, (in computer years!)

secondly, most early computer nerds were guys, and not secretaries.. they didn't care to much for "pretty" documents, just the guts of the message!