Half the men in Seattle are never-married singles, census data shows

I live in the metro region of Seattle.

I'm not sure what Third Space / Place would be viable to find a life partner. The region is relatively sparse and spread out due to bodies of water, hilly topology. By car everything still seems far and the road network (as always for anywhere) strained to the limits of what people are barely willing to tolerate for commutes. Transit infrastructure is mostly commuter busses for 9-5 jobs in Seattle, maybe a bus or two to Bellevue. The single artery of slow (no express last I road) 1 rail line each way light rail still under construction at end points and offering not much real benefit for someone trying to connect between points without transfers. Transfers outside of Seattle a huge annoyance due to sparse schedules and routes that generally don't go where someone might desire.

Which is a long way of saying; there's a very real transaction cost in time, energy, and financial resources to get anywhere.

Any hobbies, any venues, anything I can think of other than places like a library (to be quite and alone) all have their own costs. They're for profit, not for hanging out (for low / no cost) nor meeting new people.

It's to the point where I'd take a SciFi grade benevolent AI nudging stuff together to solve these intractable issues and get the right people into the right places so that matches do happen without winning the lotto level odds.

This is a huge point I think. I live in metro Seattle as well. I've lived in a few other American cities in my life, all bigger than Seattle, but I've never felt further away from the rest of a city than I have living here. The city is just downright terrible to navigate and the normal kind of urban sprawl that gives a city its "heart" is totally choked by the terrain. I've lived in places where I wouldn't blink at a 30 minute walk to and from a friend's house or a bar, but in Seattle that almost inevitably means hiking up at 45 degree incline for half of the route. Genuinely I don't know what could be done to solve this aside from saturating the city with transit options, but it's in the back of my head whenever I hear people complaining about problems around here. "Why is the traffic so bad?" "Why is housing so expensive?" "Why is everyone sad?" It's because the topography of the city looks like a fucking rollercoaster.