Re:
Happens to plenty of us and some drift off never to be seen again. I hang about but can't really be bothered with multiple builds and don't feel any strong urge to do a build thread anymore.
I found, apart from life getting in the way, that I had owned most of the bikes I could realistically imagine buying and had seen all the dream bikes done by others to an exceptional standard. What I see now tends to duplicate what has gone before, however well built so it doesn't hold the same interest. The days of 'cor, I remember them bitd' excitement are long gone outside the few gems.
Saying all that, I have a couple of lovely retro bikes that I have no intention of moving on and the forum itself is a pleasant place to hang out. Have a break and you may find you wonder back refreshed.