There's a lot of hidden value in physical contact. I don't think it should be disregarded so easily considering society as a whole became much more distant in recent years.
It's not even hidden value, it's very measurable -- when you touch someone else, your heart rates will trend towards each other and you'll gain a level of empathy that you wouldn't have had without physical touch.
Potentially. But I find there to be zero value in touching the hands of someone I only just learned the name of. Especially considering I don't even know whether they're the type to cough in their hands, or the type to not wash after using the toilet.
Bro hug with a friend I haven't seen in a while? Okay. Sweaty hand contact with a stranger? Never.
The danger is higher - that's exactly why we do it. It's an easy way to create intimacy with a stranger quickly. There's a reason politicians shake hands and kiss babies.
Handshakes far predate modern germ theory of disease. The "danger" doesn't really help with intimacy in any way. It's completely unnecessary danger. We'd find sharing tissues with strangers to be disgusting if it were introduced as a greeting today, but touching the hands of someone right after they've sneezed and coughed into them--after which we often unknowingly touch our own face--is regarded as a sign of intimacy or respect.
In one of the older versions of google maps having location turned off meant that the app wouldn't accept any input since a notification 'Turn on your location' kept repeatedly coming up somehow blocking everything. Effectively rendered the app unusable.
At least one use case is typing something in one workspace while looking at another. Incredibly useful when you need to edit config files or edit specific portions of text. Since you only need the parts of where you're "copying" from typing it out is usually much faster.
By and large this seems absolutely useless to me. Sure it looks nice and more "polished" but it doesn't serve any purpose. There plenty of better ways to signal transitions and clicks rather than flaky button animations.
It seems to me like there's two different things being discussed in this thread. The first one being passion about being better than everyone else as you mentioned and the second one is a desire to work on yourself on different aspects of life, a.k.a. try to be as well-rounded person as possible. When put in action these things are deceptively similar yet the underlying reasons for doing them are very different.