Don't know what you are missing. I don't have a modern bike in the shed (is a 1998 Enfield Bullet modern?) but in the past shiny new ones have had their place there, a TY250 for trials with the kids and my wife's Yamaha Diversion (still there but on SORN and now VMCC eligible, unlike the Enfield). I even had a Deauville for winter commuting for a while. But throughout, it was the Norton and the Star Twin that clocked up the miles.
The world moves on. I don't need something shiny new but I can sertainly appreciate them. I was quite amazed at the performance of the grandsons' Oset electric trials bikes. As far as I am concerned, 2 wheels good, 4 wheels bad (except for Classic Land Rovers of course).