With a car as nice as yours it would be hard to say if you should sell it without knowing how much you have in it, and knowing how much you could get out of it. If you enjoy just taking it to car shows and having it in the garage I think you should hang on to it. This Covid thing should be under control by next Summer surely.
If you have read many of my posts here on the forum you will know that I drive my Reatta on day trips through the beautiful mountains of East TN as often as I can, and I love taking photos of my Reatta on the trips. I don't give much thought to putting miles my Reatta. My Reatta will never be a car worthy of being a show car so I'm going to drive my money out of it. If I had a low mileage Reatta like yours I might see it differently but I think a good compromise would be driving it as much as you want while keeping it in the best condition you can. I agree with the Buick commercials of the late 1980s that said, "The great American road belongs to Buick!"
I wash my Reatta by hand. I think that is best but I don't think the "touchless" car washes that just spray water would be to hard on the paint. I would never run any car though a car wash that has brushes spinning around. You never know whether or not one of those brushes has the last cars antenna wound up in it.