I get the fascination. I mean, I'm 23, yet still have an interest in swords and guns etc. It's just what they represent. I'd like to have a sword collection mounted on my wall. Ornate swords with history behind them (preferably antiques). Not into ancient guns, but I do like BBGuns. I have a Glock9mm, Colt National Match, and a H&K MP5 electric. The only thing dangerous about these is they 'look' real, so you dont take them out in public. But I've stopped collecting them now though, as I never fire them, so they're a bit of a waste of cash.
I do understand the male fascination with weapons though. Weapons have a great meaning and a great presence, and mounted on a wall look tough. I was thinking if I'm ever properly loaded, I'll definitely have a room in my house lined with shields, armour and as many twisted medieval limb severing devices as is possible.