I lost interest in doing my own after my last Caterham (which was easy anyway). Have gone to independent specialists for Elise. 350Z and now Jag. I have to be honest that, as much as I am impressed by people who do all their own work, when it comes to buying one I would prefer a car that had a good specialist/independent/dealer history - assuming we are talking about spending a few thousand pounds. This may be irrational but it's what I've done so far. I like to make quick purchase decisions - I get bored easily.
I don't have a garage anymore - but that's probably not an excuse