Mine goes back to 2013 as well as some I remembered from my childhood. I started mine because of LSD: Dream Emulator, which was based on the dream journal Osamu Sato's coworker kept. (it was released as "Lucky Sweet Dream" and you can find it online)>>2402
I type mine because my handwriting is shit and my hand cramps up too fast when I write. I doubt it makes a difference as far as your memory is concerned, but if you think it might you can try each and see.>>2403
Sometimes I can remember a dream well enough for a small paragraph weeks later, other times I have to grab the nearest device/paper and jot it down right away before I forget it. In the latter case it doesn't take me too long to power up my laptoaster and log into a comfy TTY.