I did, was quickly unimpressed. The cockpit is 25 inches wide. lol no
Realize, though that that is five inches more than a front-seat occupant in a Cessna 172 gets. Forty inches wide at the shoulders, divided between two people. The SE-1 is three inches wider than my Fly Baby.
Its a useless airplane (to me). Other than being shiny it solves no known problem other than 'how can I spend $70k on a toy I will fly 5 hours a year'.
Like you said, it's useless to you. But it exactly describes my flying for the past 40 years. Other than an eighteen-month dalliance with a shared Stinson, I've been flying single-seat "toys" since about 1986.
Why? To quote Johnathan Livingston Seagull: "I just like to fly." I love wrapping up in leather flying coat, scarf, helmet and goggles. I love puttering above Puget Sound, looking for whales. I love watching the fall colors from above. The hum of the engine. The caress of the slipstream. The excitement of slipping in to land at a new airport. And the pride when "Moonraker" gets swamped by kids at a local fly-in.
I understand you have different uses for an aircraft, and can accept that. But my entire life, I looked at airplanes as something to have fun with...never justified ownership for utilitarian reasons, even when I owned my first airplane (a 150) and was partners in the Stinson. I bought my Fly Baby for $10,000 almost 30 years ago. That comes out to $333 a year. Not bad. My hangar rent was more expensive that the airplane itself; at the time I moved in June, I was paying $7200 a year.
And spending a lot of money on toys isn't unusual, in America. My cousin recently reposted this at on FB:

Forty *thousand* dollars for an off-road vehicle. You'll find the same sort of prices on other items, like motorcycles, boats, jetskis and any number of modern toys.
If the person can afford it...why squawk?
My wife is fully aware of how much money goes into keeping my airplane. We can afford it, so why worry? I don't go to Vegas, I don't drink or smoke, and don't chase women. The airplane is my vice, and she's good with that. I could probably afford an SE-1; I could probably even talk my wife into letting me get one. Already tried her on a Carbon Cub. She wouldn't budge, but this sounds a LOT more affordable.....
But...it's just pure fun, and a lot of people need that, nowadays.
Like I mentioned, I move to a new airport a couple of months back. It has some challenges, even with my little airplane. I put together this video to help explain what's happening to my Fly Baby buddies. But can you watch this and NOT think it's fun????
Ron Wanttaja