Just an old fart really and spent too long on bikes (only joking, loved every minute really!).
Old twins weren't too bad really, the sports (high compression) singles were the worst. It's so simple starting a bike now - set choke or some sort of slow running adjustment, if you have one, and thumb the button, and wait for the ECU display to tell you it's warmed up and ready.
Was a bit different then - (this is just a simplified version) -
Turn on the petrol tap, set the choke/air mixture, tickle the carb, retard the ignition, lift the valve lifter to lower the compression, work the kickstart to get onto the compression stroke, launch the kickstart all the way down.
If you got just the right setting on all the above and got the kick just right, it might just think about starting, but on a good day you'd be repeating it a few times. Some days you just never got it started and you'd spend the next hour or so wiping water off plug leads with a mucky rag from the toolbox (no WD40 then!), checking plugs, checking points on the magneto etc., etc..
Bit difficult to explain, but when kickstarting a bike, you had to make sure to complete the stoke to disconnect the kickstart ratchet from the engine.
On a bad day, the engine could fire back and if you had not completed the full stroke it would fire the kickstart lever back up, it was rare to suffer like Pierre did, but in my case it fired my leg and the rest of me over the other side of the bike onto my arse, (I was a lot lighter then!).
If you could ever afford a Goldie, you'd probably love it more than any other bike. We tend to like bikes like the the Falco and most Dukes etc., cos they have character, but all bikes had it then. The Japanese took away the unreliability but the character seemed to go with it.
Ah the memories!
Sorry I'll shut up now.