On one hand, I've been married for more than three decades and still enjoy a very active sex life - usually three or more times a week. My wife easily achieves orgasm from traditional PIV. This is a good thing (obviously) but it's a bad thing as well. It's a bad thing because it's all she wants to do ... ever. I enjoy both giving and receiving oral and I'm dedicated to her satisfaction. I want her to get her orgasm through oral so I feel free to ask the same for me. She can orgasm from oral but 99% of the time she either doesn't want it or upon beginning it, wants to switch to PIV which of course precludes oral for me. Some days she will do a BJ for me and it's good, even great, but it feels like it's imposing on her because what she really wants is just PIV again. What I really want to have an enthusiastic BJ and **OFTEN** so I can get an orgasm from the BJ without feeling it's one-sided or selfish. And God help me if I were to ask for variations that I'd really like to try like CIM and deepthroat. I can't get what I want when sex is always PIV.
Have you actually tried explaining or telling your wife this or do you just let it build up inside? Sounds to me like your sex life is routine and while not a bad thing because you're still actively active, routine can still feel more like a chore. She also might have her reasons. I'm just going to assume PIV means penis in vagina? Lol. Maybe this triggers a better orgasm for her than oral. Too much oral can easily desensitise the clitoral areas making it harder and longer to achieve orgasm. On the other end of the scale, some women have a more intense orgasm from oral, so maybe she's just one who prefers a penetetitve orgasm, ugh I feel weird saying that. Go for the PIV for 5 mins, pull out and go down, PIV again, I dunno lol. Best of both worlds. Even in Female/Female intimacy sometimes you gotta tell your partner, aight, enough with oral, work the toys.