As a fellow fairly tall person, even beyond how it looks to be tall, you don't need to be much over 6' before it starts getting downright inconvenient. I'm just shy of 1.9m / 6'3", so by no means exceptionally tall (for my country and gender, at least) and like... there are a lot of times when it's just troublesome. I don't fit in places or things. A lot of clothes don't fit me well. I hit my head on things. A lack of legroom is often uncomfortable. I feel like I'm ruining the view for other people at concerts. The idea of people close to my height actively going out of their way to make themselves even taller - even if it was a trivial process, which it clearly is not - is madness to me
Of course I do understand that it's a self-image thing and such things do not care about practicalities. Everyone's got to find a way to be happy with themselves. I get that. It's just... god I hate hitting my head on stuff, that shit hurts