I’d say very rarely. I know for a fact my father never got sex in the last 5 years before he died, let alone a blowjob and I’d venture a guess it was more like 12 years since he got anything sexual from my mother. He didn’t even get a kiss or cuddles from my mother as far as I can remember. Keep in mind this man wasn’t ugly either. He was a 6’1” 220 pound guy with a normie tier face, and even he got nothin for ages. My mother is a 230 pound 5’5” obese women and she still didn’t give my father anything sexual for a long time. I honestly don’t know how he didn’t lash out at her more for his frustration looking back at it. I wonder if he ever cheated on her. I wouldn’t blame him at all if he did. He would often time be gone for a couple hours occasionally and didn’t tell us where he went. Maybe he was railing some other woman at those times, and if he was that would make me feel good