It’s not incredibly rare at all. Phones these days are engineered well and they’re much less susceptible to fall damage. I’ve dropped my case-less iPhone X on the ground half a dozen times and it’s only collected a few dings on the corners.

I always found the older, entirely aluminum iPhones way too slippery to hold onto without a case.

I heard somewhere that in Holland every bicycle + lock weighs 5kg. If you have a cheap 5kg bike no one wants it and you don't have to lock it. If you have an expensive 1.5kg bike you need a lock that weighs 3.5kg to protect it.

In tour de France, bicycles under 6kgs are forbidden. Bicycles under this weight are incredible expensive and dangerous. Using metals like titanium and carbon fiber.

Most light and simple(no suspension) road bicycles weight usually 10 kilos, most mountain bikes do weight 15-20 kgs.

In Holland, most bicycles you see on the street are simple and cheap.

I think seanc probably has the idea of the saying right but with the wrong specific numbers.

It's more like 20% of the bike's cost should be in locks.

And a 1.5kg bike? What kind of bikes are you looking at?

You're off by a large amount. I'd say its closer to 15kg, and bike quality and weight aren't that correlated here. It's a lot more about maintenance and not being rusted to hell w.r.t. how likely a bike is to get stolen.

In general, since we are so flat a country, bike weight doesn't matter much. We'd rather have extra fancy stuff on a bike than have a lighter bike.

Wholly dependent on your environment. I don't see a case very often where I'm at

I don't use a case. If it were meant to be used with a case it would come built in. Iphones could easily double in thickness without making it harder to slip into a (male) pocket.

There are pockets for women's clothing?