This article claims San Francisco is a "great biking city". Are you kidding me? It's dangerous as hell, I never felt safe biking there. Come to Portland and you'll see what a real biker-friendly city is.
Come to Amsterdam instead.
Portland is 635 miles from SF
Amsterdam is 8.57 times further away than Portland
In my personal estimate, Amsterdam's bike friendliness is about 6 times that of Portland.
Therefore, it still makes more sense on a bang-for-buck basis, for an SF resident to check out Portland vs Amsterdam.
I've been to Amsterdam several times, while I agree it's more fun, it's definitely not 20 times as fun. I'd say 6 is about right.
Compared to most American cities, SF is pretty bikeable.
Of course I want it to be better as an SF biker myself, but still it's pretty good compared to the norm.