the right to express your opinion. I suspect they do, too.
You are right though, to discount one's opinion because of their age or the generation they belong to is ageism. I don't know how apologizing in advance makes it any less so.
I wonder whether in 40 years or so, the generation you belong to will be seeped(sic) in a tradition, way of life,(sic) and general outlook that will be be very different than what exists then.