Well, there have certainly been a lot of responses. Thanks everyone for taking the time to read this thread, and thank you to everyone for the suggestions. Maybe this will save me from having to call Dr. Phil.
You will all be happy to know -- at least I'm happy to know -- that the "Lord of the Rings" edition of Risk is wrapped and sitting beneath our Christmas tree. Monday, my wife called the gaming store in Austin where I originally saw the game -- it was closed on Sunday when we were in Austin trying to find it -- and they had a copy of it. They saved it for her, and she drove down today (Tuesday) to get it.
Some people expressed puzzlement as to why I would tell my wife what present I wanted for Christmas. Well, this is just something we do. We both ask each other if there is something we really want for Christmas, and we each try to get that gift if possible. But that isn't the only gift we give each other. My wife asked for two things -- a jacket and a specific DVD -- and I bought both. Although she won't know until we open the presents that I actually was able to buy them. But I bought her several other gifts she didn't ask for, but which I know she will like. I only told her of two things I wanted -- the Risk game and a specific CD. I only know for sure that she bought the Risk game. There are several packages beneath the tree with my name on them; I have no idea what is in them, but I'm sure I will like all of them.
As to my wife's not understanding why gaming is so important to me, I'm still not sure what the problem is. I don't believe it is resentment over my spending too much time gaming. We try to game once a week, but there are many weeks when other plans or events prevent that. There are even entire months that go by when we don't game, or only get together once a month. I spend a lot of time doing things with my wife. We don't have any children, so it's not like I'm leaving her home to take care of the kids while I'm out having fun. And there are times when she goes out with her co-workers or friends, and I stay at home by myself or go do something with my friends.
In many regards, I feel I'm very lucky to be married to the woman I am. She is a big sports fan -- in many ways, a bigger fan than I am. We have season tickets to University of Texas football and baseball games, which we go to together. And we both are fans of the Texas Rangers baseball team, and go to at least a game a month during the summer. We also watch sports together on TV a lot. In fact, my wife enjoys watching sports on TV more than I do. I prefer to watch sports in person, and sometimes find myself getting bored watching a game on TV. Not my wife -- she gets into the game, even on TV, and yells and curses and throws things.
If she does resent my gaming, the only cause I can think of for the resentment is that I have been gaming for such a long time. My wife has trouble sticking with things that interest her -- except sports. She has hobbies, but she pursues them short of haphazardly. She'll get interested in one thing for a while, then drop it for something else, then might go back to the first thing or might move on to something else again. Most of my hobbies and interests, I've had for awhile. Usually my new ones will grow out of my older interests. For example, I was interested in gaming before we were married. A few years after we got married, I became interested in collecting swords and knives -- this grew out of my interest in gaming and my interest in history.
Another possible reason for my wife not wanting to buy me gaming stuff could be part of her upbringing. Both of her parents were deceased by the time she and I met, but I get the impression that she was raised to be fairly practical. Things you buy should be practical. When I first started collecting swords and knives, she used to get upset with me ever time I bought a new item. "You're going to look funny wearing those knives when it gets cold and you don't have any clothes to wear," she used to say, or, "It's going to be pretty hard to eat that sword when you get hungry." Her family wasn't poor; they weren't rich either, but were fairly well off -- her father was a doctor and her mother didn't have to work. She and I aren't rich, either, but we get by. We have enough money to pay our bills, with a little left over to do things we enjoy.
My wife also is not into fantasy or science fiction. She has no interest in reading it, or watching it on TV or at the movies. She liked the first three "Star Wars" movies, but is not interested in seeing the prequels. She has no interest in seeing any of the LoTR movies. She tried playing D&D a few times, when we first got married, but she didn't like it. Although she was pretty good at it, especially the role-playing part of it. She likes playing characters -- she has appeared in several plays and musicals at our community theater, and is talented -- she can act some, she can dance some, she can sing some.
Well, this is getting pretty long, so I'll stop for now. Thank you again to everyone who offered advice and support, and thank you for caring. Merry Christmas to all of you.