I'm delighted that more companies are offering reduced rates to seniors. They are the ones who paid huge taxes/huge interest rates for many years and laid the foundation for the economy that we have now. It's about time they got some breaks after years of precious few. Ask any of your parents/grandparents what it was like when they were working and you might be surprised at the their answers. Our generation are the lucky ones that we can afford to go to gyms/clubs etc. We should be thanking the older generation rather than begrudging them a few euro in savings.
In this club (its not a golf club) we offer discounts to students, so on balance, it isn't unreasonable to offer discounts to seniors as well.
However students don't have to serve 10yrs to get the special rate so why should seniors? I think that particular point is the discriminatory aspect and my understanding is that at any particular point everyone should be treated fairly, not based on length of membership.