Brenda:
Secondly, to attach pejorative terms to older people is questionable.
Questionable?! Unacceptable, more like!
But, as I have argued strongly on another thread of this type, you cannot deny that people age. There is no point in people saying their grandmother/auntie Brenda/godfather is hail and hearty at 96 - most old people are not. So some discrimination is obviously necessary - do you want someone of 80 driving your bus or tube train? (And this has become an issue in the US, if you think this is a silly point.)
Yes, you keep arguing this point, and other posters keep agreeing with you! If there are medical reasons why someone shouldn't drive, then obviously they shouldn't drive. This can apply to someone much younger - e.g. if they have a condition like epilepsy. These decisions, though, have to be made on a case-by-case basis. There is no basis for a blanket cut-off point for any of these things, simply because we all age differently. As an example, our eyesight starts to change in our mid-30s. This is a fact, and it happens to us all. But the rate of change is different, so the point at which we have to start using reading glasses varies enormously - for some it will be in their mid-40s. I'm in my mid-50s and have only recently had to start using different contact lenses to deal with this.
Lastly, what is older? At 50, I have to keep pinching myself to realise that, well, I'm bloody 50! I think that we have to remember what it was like being young. When I was in my 20s and propositioned (quite properly) by men in their mid 30s/40s, I was "Yeeeeuuuccchhh". People's parents were all old fuddy duddies but probably younger than I am now.
There's so much wrong with this paragraph I don't know where to start! But I will 
It's not about just being older. It's about being discriminated against on the basis of your age - whatever that might be. And in terms of getting older, there's no point at which you suddenly become 'old'.
Your reaction to being 'propositioned' by someone older than you is very telling - shows just what your perspective of age is.
I guess we have to allow young people to be revolted by us and not think that we are speshul.
And yet again you show your hand - why on earth should older people (whatever age you're talking about) revolt people? That's such a strong, horrible word!
And at 55 I don't want to be speshul - again, a deliberately offensive word. I just want to be treated equally