My wife periodically just wants to suck me off at times I would least expect any oral sex to take place. She totally loves to suck my cock and like you doesn't always want vaginal sex but she's sure to keep me wanting her and sexually satisfied by simply saying "How about I suck your cock Baby?" There is no way I'm going to say no...Most times she'll message my crotch (at restaurant-movie theater-driving) and say "I'm going to suck your cock"...OR..."When we get out of here my mouth is going to get busy on you". She's something else. So, Yes, I enjoy just a great blowjob from time to time versus full blown sex because she always swallows and I love cumming in the mouth that's sucking my cock.
Now to me, penetration sex is great don't get me wrong about that. But, and big but, everything else is more so. The art of the tease and please, hands and mouth, both given and received. No need to finish deep inside. My best orgasms happen with hand and mouth jobs.