I'm Old, so my time in the Gulf was before Etihad or Emirates, and when Dubai and Abu Dhabi were just other cities like Muscat, Manama and Kuwait City (and my parents knew Iraq before the Revolution, Iran before nationalised oil, and Kuwait before any oil!). The options were Gulf Air or BOAC, then BA; we tended to fly BA as that's who Dad's company had a contract with. I flew BOAC and BA first class but it was mainly more room and better food - I got to take my budgie in the small cage with me too! To and from secondary school in the UK, I flew economy but still got the perk of being escorted past passport control and driven home; my passport, duly stamped, and my bags, through customs without me, would be delivered home while I slept off the jetlag.
I did once fly Concorde home as a sixteen year old and got met at Heathrow by an attendant to carry my hand luggage. A short journey with just enough time to flick through a couple of upmarket glossy mags and eat the excellent food. I think I even got some of the champagne.
Since then, I have been upgraded to business class on the London-Edinburgh route; I think that they felt sorry for me as it was the last leg of a complicated three-leg trip back from Germany as the travel department at St Andrew's House had informed my government agency that the original flights had been cancelled and my lot forgot to book others and to tell me! Nothing like turning up in a small airport in the depths of a foreign country on a public holiday to find out that my flights were cancelled

. Lufthansa were great though, even if the route was
interesting with tight links (yay for German efficiency, my bags actually transferred with me, wouldn't expect that in the UK!) and the last leg with BA saw me upgraded after I collapsed over the desk at Heathrow and told the guy my travel saga. The lounge was very welcome, even though I was rather out of place with my jeans and Scotland t-shirt (so my German driver could spot me) amongst all the suits on a weekday.
Edit to add: Lufthansa's short haul internal flights were FAB. The airline had a different name but it was Lufthansa owned and run. The single class seats had much more room than the equivalent UK economy and were leather for a start. Excellent and efficient service too. Perfectly on time so my dash through Munich Airport for a 30 minute change was feasible.