I too am a manual handbrake fan, as I am in control and echoing above, was taught how to use the clutch and handbrake in tandem when on hills etc. Unfortunately, with the growing trend and rise of younger people needing everything done for them as they cant think for themselves, its not going away, nor are electrics in the car. I agree, some electrics make things safer, but I've always argued, anyone who needs parking sensors on a Nissan Micra, should have their license revoked, for example.
Back to topic, though, a couple of things of note. I had to do 'Advanced Driver Training' (although it wasn't what I called advanced, but hey) for work a few years back. I was told I had to drive as I would normally for work, it wasn't a driving test and I couldn't fail, but we needed our 'risk' assessed. I drove 'normally'. I used handbrake at lights, on hills etc. I was told, 'you are wrong'. When at lights, you are not Parked, therefore you don't use the parking brake. You put your foot on the brake and if you need to move off quickly, lets say a car is going to hit you from the rear, you can make a quicker get away. I advised I don't like blinding the guy behind. I was told to ignore the person behind, its about my safety. It makes sense at night, with no-one else around, but not in traffic. I use this technique at night, as if someone is coming too fast and doesn't know lights (or an obstruction is why I'm stopped) I hope the brighter lights are easier to see. Once I have another car 'stopped' behind me, I take my foot off of the brake. If you had the lights 'turn off after 5 seconds' you'd lose that safety element, so I can see why it isn't done. It doesn't now if you are in traffic or not, but, I take your point.
And as for the buttons themselves, I wish all manufacturers would make a standard. Some come off automatically when driving off, some don't, some are pull on pull off, some push on pull off or vice versa, and its bloody annoying!!!
Like manual gearboxes, we are going to be in the minority soon, as more and more people want easy life and things done for them. We are no longer the target market for cars as we age (IMO). My neighbor argues with me that 'why do you need a manual, you are telling me you can change gear quicker than the computer and know when to do it?' I argue back, no I don't think I'm quicker, but I'm also not driving everywhere like its a race and need to change gear that fast. If of course I was trying to set a lap record in a GT2RS, I'd happily let the car do the work for me
Long live manuals and long live the handbrake