Sounds like you've never taken a train. Time through security? There's basically no security in American train stations (or French TGV stations). I've only experienced Chinese train stations with security but with wait times far less than American airports. Time to the airport? Well yes because the airports are inconveniently located. Train stations are right there in the downtown.
International HSTs with passport required border crossings (ie Schengen-UK) have passport control and security - I think the security checks are to minimise the risk of terror attacks in the channel tunnel though.
But yeah, for intra-Schengen you just go to the platform a few minutes before departure, find where your carriage will be, and step in once the train comes to a stop.
So much less faff than air travel, and I’ve noticed better pubs at major stations meaning waiting for your train isn’t as boring as it used to be…
Security theatre. What's the point of metal detecting you on eurostar? You going to hijack the train with your knife?
Cars and vans in the tunnel don't go through metal detecters, and you can smuggle a far larger bomb that you can in a suitcase.
But eurostar is the exception to the rule with security. I tend to aim to arrive at my mainline station about 5 minutes before the train leaves incase I get delayed on-route, but that's because I live in a small town which only has 1 train per hour. When I take a route with 3tph I don't bother looking at the times, just go when I'm ready and accept on average I have to wait for 10 minutes.
I agree. But I just looked at Le Shuttle’s pages on security and they claim to put 100% of trucks through millimeter wavelength scanners (presumably to detect unauthorised travellers) and x-ray systems that are supposed to detect arms and explosives.
The SF one would apparently be near union square. Having been there, that seems easy enough to get to, insofar as anywhere is easy to get to in SF (it does not exactly have the greatest public transport in the world).
The train stations have connections to other transit - hard to see them as any less convenient than airports (LA's famously had no train connection until recently).