Congratulations on the new Tdub, and welcome to the ranks!
As far as safety is concerned, I follow a basic rule: Half the motorists are out to get you, you're invisible to the other half, and there's no way to tell which is which. To borrow/paraphrase a saying I learned in the Navy,
"Motorcycling in and of itself is not inherently dangerous, but it is terribly unforgiving of any carelessness, incapacity or neglect".
I also agree that it is very therapeutic. In fact, there are groups helping veterans suffering from PTSD by getting them involved in motorcycling. I believe they refer to it as "wind therapy".
I'm glad to hear you took the MSF course. Keep in mind they have more advanced courses for when you get a few more miles under your belt. There are many riders who take the Experienced Rider Course every Spring to clear the cobwebs out after being inactive all winter.
As far as the pushback you've been receiving from your better half, let her know that the courses are to keep you safe on the road, and that you take them out of love for your family so you will be around for them for a very long time. This also applies to the gear you wear when riding. The more gear you have, the better the gear you have, the safer the gear you have, the more you show how much you love them and care about them.
One last thought. Perhaps you might consider taking the basic course again, but taking it together. It could help her understand why you enjoy it so much, and would be a way to enjoy some quality time together. You could help prep her for the course, considering the TW200 is one of the best motorcycles for learning how to ride. Let her know that she doesn't have to take up riding, it's just for fun and the experience. Still, you never know. You might even wind up with a riding partner! (Only downside to this is you might have to spend some bucks to buy another TW. Hmmm, actually I'm thinking that wouldn't be a downside at all! Disregard that last comment!) You could do the same with your kids when they are old enough if they want to. (Hmmm, might mean buying even more TWs!).
Anyway, enjoy your new bike, and all the wonderful adventures and experiences you have coming your way! 👍