Of course you want to be sexually satisfied; you want you wife to desire you, want you, and initiate sex with you. Your need for sex is a legitimate physical need. Men need sex. The fact is that if your wife fulfills your sexual needs, you would do practically anything for her. If she asked you to fold the laundry for her, you would be happy to. If she needed you to drive an extra 10 miles to get the kids, you would ask her if she needed you to stop by the store as well. If she is keeping you happy in bed, you will be happy to keep her happy out of bed. And of course, the result of you keeping her happy is that she will desire you and be passionate in bed.
So: why not put the cart in front of the horse? You're in a rut. Your wife's libido, passion and desire are hitting lows. Instead of waiting for her to rev the engines, you go first. Make her happy. Do things for her with joy and offer to do more. Treat her the way you used to treat her. You can recall a time when if she needed you to go out of your way to pick her up, you did it gladly because it meant you got to see her. You wanted to go out of your way to see her. You probably made excuses to do things for her just so your could hold her for a moment.
Where did those feelings go? What happened to that motivation? The answer is this: it went away when the chase ended - after you got her 100% - after marriage. So why not start looking forward to seeing your wife? If you can focus your heart and mind on everything you LOVE about her, you can find that anticipation. And if you can find that anticipation, you can find the joy in doing things for your wife - just to get to see her and hold her.
Men need sex; and women need sex, too - but for very different reasons. Women need to be loved and cared for; they need to know you want to be with them and want to go out of your way for them. Believe me: if you change your paradigm and start doing things for your wife with joy, she will start to really appreciate you and she will start to really want you. Then she will be motivated from within to initiate sex and be passionate in bed. Her libido will be fully charged and you will become a sexually fulfilled husband.