I dearly wish I still had the dear old Le Mans III.
But what I do still have are the remains of the BSA B25SS Gold Star - I have the engine, the frame, and a rear wheel, and a few other random bits like yokes, bars, and tank. I also still have the Norton 16H - all together, but needs a dynamo and magneto rebuild, which it is taking a while to get round to. I don't plan to part with either of them. The BSA is a project for when I retire.
Also in the garage is an Aprilia RRV450GP which my son was racing until our race project finally ran out of the ability to borrow more money about a year ago. And my Griso. But I don't think I'll be growing old with either of them.
Other than the Le Mans, the only bikes I really wish I still had are the Morini 3 1/2 Sport, which I made the mistake of giving to a girlfriend while under the illusion that she was a keeper
, and the BMW R80ST, which was a surprisingly lovely urban hooligan tool
, and which met a similar fate to the Le Mans.