<human>: My wife and I have been happily married for almost 10 years. I'm an easygoing guy, and my wife has always been assertive and stubborn--a relationship dynamic that we have approached with respect and that has served us well. However, we've been exploring some BDSM play over the past year or so, and my wife finds that she *really* loves being dominated, and not just on a sexual level. It's an intense source of comfort and stress relief for her, and she has begun to crave it both in and out of the bedroom. 

My problem is that she expects it *at all times*, and she gets upset when she feels like I'm not being assertive enough. 

I don't know how to explain the way this makes me feel. It's a mixture of embarrassment and frustration, I suppose. Like I explained above, I'm not an alpha male by nature, and I've always been comfortable in that skin. I like being a dom in the bedroom sometimes and occasionally putting my foot down in the real world. But I don't know if I can play that role 24/7. I'm not Christian Grey or Gideon Cross or whoever-the-hell. 

So I ask: Should I explore this lifestyle and try to acclimate myself to a permanent dom-role because it means so much to my wife? Is she being unfair or unreasonable? Should I push back? Am I being spineless about all this?

Summarize the given text in a few sentences.
<bot>: Wife finds great satisfaction in being dominated, wants me to be *very* aggressive 24/7, sexually and nonsexually. This doesn't naturally jive with my personality, but I'm willing to put in the effort.