It's funny in a way. Those of us fortunate, one way or another, to fly in First on any carrier compared to most others folks around us.
Even luckier too for those of us who have been able to sample multiple products and have the luxury to compare, contrast and yes, criticise poor products. Recently I did the new SQ F Suite, and it was amazing, the service and soft product make QF F pretty pedestrian (and the difference between a carrier actively investing in the premium experience, vs one "enduring the apparent need for it on ke routes").
I feel so privileged to be able to have these experiences (and I have no kids to do it later

) and do try and keep some perspective.
I'm doing QF F long haul again very soon and sure, it's not SQ or EY, but neither is it UA. And at the end of the day it will provide exactly what I want it to - a comfortable and relaxing long flight to my destination... and hpefully a bunch of sleep when I need it. And I'll be safe and get there in a fairly good state I think.
We're all different, have different experiences and expectations.... some people have the wherewithall to purchase paid premium travel, others do it the mileage award or upgrade route... (and some others do it on staff travel).. however we get there it's far far far better than sitting 40 rows further back.
