Yes, it is a slow way of communicating. I have been giving this a lot of thought though and realise that all "forum" style talk is to a set of people rather than an individual. Letter writing is private and intimate and aimed solely at one person. Private messaging is the same as texting and telephone and I'm not giving up the phone, so instant communication is still there.
I will find out if the way we write to each other has changed with the advent of social media. On Facebook, even with privacy settings and friends you "know" I communicate in a certain, for public, way.Certain topics are never discussed, and a jokey persona is maintained. That makes it sound like I will be writing Morrissey style angst ridden tombs. I just think,theories more scope for variation in a personal letter.
Adam Fat Buddha has a rugby background, and his weight is not down to fat, so maybe you're fitter than you think. The running is the one that can cause injuries, so just go easier on that and put in bike and swim miles initially. IM marathons aren't fast affairs it's acceptable to run/walk.
I will keep my email for work purposes, but Facebook, RW and tri talk are going. I am keeping the telephone. I don't have gas anyway, not giving up electricity, and have been known to wipe my arse with grass or snow when the need arises.
Dave thinks I won't be able to do it, which is enough of a gauntlet to make sure I do.