Yes - it's definitely ruined me (and the Mrs)!
I took my first ever flights around 22 years ago, and did nothing but Y for about the first 8-10 years of it, which was mostly work travel, but a couple of LONE4 RTWs and other personal trips, as well. After lifting my points earning game dramatically, I started to put in CR upgrade requests on just about every flight I took with QF, and also started to self-pay for upgrades on intra-Asia short hauls with MH, SQ & others (work policy was Y; regardless of time or distance). I was soon travelling
mostly in W/J, whilst only ever booking Y at the outset.
Didn't take long to get so accustomed to it that pretty much all trips had to be in J, and if QF points upgrade options weren't available/likely, or the personal upgrade cost too high, then I'd move travel to dates where it would be, or change my routing, etc. Thankfully it was largely up to me when and where to go, so easy enough to do. Personal travel was also increasingly in W or J, especially for long-haul. Work travel eventually dried up when the pandemic hit, and never re-started for me... but personal travel took it's place, and has been exclusively in J or F since; whether via points, or cash.
My son is now 8, and I think has only been in Y once... all else (and all he can recall) has been J. With most of our travel now being personal and done together as a family; my wife is also WP, and my son was just short of reaching WP this year, himself! He has no idea how fortunate he is, or that he'll be somewhat protected from the pain of Y travel as an adult by the real likelihood of having attained QFF LTG by the time he gets there
My thanks to AFF for at least helping to create a more
efficient set of monsters!
Cheers,
Matt.