None of my flying for work goes beyond our borders and we only get Y.
All my overseas traveling is personal and in adulthood I've never crossed an ocean in anything less than J. This has been a mix of mostly rewards tickets but the last few years, at least one J trip a year paid with cash when I find discounted prices I find palatable.
Admittedly the value proposition is changing for me as PE is being introduced on more routes. Y just isn't something I'd do for longer flights as I'm a tall fat guy. PE on AC looks like something that'd work for me since I can sleep fairly upright, and there's enough leg/shoulder/*ss room.