Wow, I really do appreciate all the responses. They have truly given me a lot of different points to think about.
I do have to run, I'll respond later with more specific info. To clarify my OP on a couple of items quickly:
1. I make it clear to her that the guns serve 2 purposes for me: protection and my hobby (my ONLY hobby, I might add) ... I don't do "guys night out", I don't have a boat that eats $$$, I don't go to the gym for hours on end, etc. Heck, I've been so busy with work and home projects lately that I only got out shooting 4 or 5 times in all of 2011. I used to get out every few weeks.
2. I (and my friends and family) would say that my awareness does not cross into excessive worry, paranoia, etc about being attacked. Basically, most of the time I'm in what Col Cooper would call "condition yellow" - a relaxed state of alertness. For example, when in a restaurant, I usually glance up at new patrons coming in, just to make a quick assessment, and that's it. Though you know, I don't feel comfortable with my back to a room. Interestingly, my wife is aware of this and she always picks a table where I can best see what's going on. Odd of her, now that I think about it.
3. Financially, we have no debt other than our mortgage (and it represents under 25% of my net monthly take home pay), I earn about double the national average and we do keep a detailed monthly budget - EXCEPT we do have "fun money" that we can each do with whatever we please. Same thing with gift money received, bonuses, etc. So that's where my gun/shooting budget comes from.
So I would describe "money" stresses in our relationship as existing, but being less than average. Ironic, that is often the flash point most of the time, but not for us.
Gotta go, but I'll be back later.