Hah, okay. I don't think you're a geezer, I just don't think you're using enough imagination. Imagine embedding sensors in every square meter of roadway for precise detection of potholes/stopped cars/accidents. You mentioned wearables -- which I think are going to be huge, despite they naysayers. Imagine using your magic decoder ring in place of passwords for anything where you're not worried about the gun-to-your-head or cut-off-your-finger attacks, and having all of the connected devices around you such as lighting or color scheme retrieve your preferences over the network and conform to your preferences.
In terms of jumping in -- sure, I'm not going to pay money for anything unless I really think it will provide value to me. (Value might be just in playing with it and seeing what it can do even if it's not perfect -- I did lay down $300 for an Oculus Rift DK2 just to be able to play with it, even though I know VR has a ways to go. But in general, I wait until technologies mature before buying them).
Speaking of monitoring of body functions, I would absolutely love to have automated monitoring of pulse rate and O2 saturation so that 911 could be contacted and people around you could be alerted if your heart stopped or if you were choking/drowning/etc. Sure, it might only help in 10% of the cases, but hey, if so, that's still a lot of tragedies averted. There are absolutely privacy concerns that have to be dealt with.