We are members at the Museum of the Bible in DC, plus the monuments are great to visit. I flat out refuse to take the DC metro. If I can’t carry a firearm, I’m not subjecting myself to the chances. I don’t allow my wife to ride it either. Driving yourself is always better. We use Spothero and pre-pay for parking.
I used the metro for many, many years without a single problem. I won’t get on it, today.