I agree, all this curtseying seems totally ridiculous and hopelessly dated. I wouldn't curtsey to anyone, and the reason is not only my bad knees, but also my attitude; they won't curtsey to me, why should I curtsey to them!
Not that my knees would allow it these days, but the only person I'd bow/curtsey to is QEII.

Once she's passed, fuggettaboutit.