I want to take trip my wife won't ever be able to experience herself.
What kind of trip are you talking about?
I want to go down on my knees, pound her with my cock, fuck her deep and go down on her horny, vagina.
It's good to have healthy sexual relations with a partner. Just be considerate of her sexual desires as well. If you are a selfish lover then she may not reciprocate in the bedroom.
What's wrong with this. I'm doing it because she's a horny bitch.
Nothings wrong with what you said, however you should also take her needs into consideration. I'm sure she has things she'd enjoy doing with you that aren't your go to. Having a good sexual relationship means being equal and doing things both want to do.