I'm so sorry that you are having difficulty finding the right group. I don't think it has to do so much with age, as it has to do with cliques, closed mindedness, etc. However, not everyone is like that, so give these groups a try in another month, year, whatever. Sometimes the dynamics of clubs change as new people come in, and it sounds like you are in a community where the older ideas have not yet been replaced with newer improved ideas. They will be.
Maybe you can ask people you know at work, in your neighbourhood, church, school, wherever you can think of if they would be interested in meeting as a quilting group. I have one at work that works very well. The group consists of 6 people, 3 of whom either do not quilt or quilt very little, but quilting is our excuse to get together. It comes with time.
There is a generational gap in quilting ideas. I'm 61, my mother is 88, and has quilted for years. She has never liked one quilt that I have made because they do not fit into her formula for a quilt. If the quilt does not consists of 12 identical pieced blocks with sashing inbetween them and a border a certain width, hand quilted, binding the same as the backing, then it is not a quilt. Her quilts are indeed beautiful, but not what I enjoy making. The ones I like are asymmetrical, some have sashing, some do not -- if it is different I want to try it. You must be happy with what you enjoy doing and the heck with anyone else.
I wish you lived closer to me because I need some new ideas and input from a younger perspective.
You will find someone who is a kindred spirit. Just don't give up.
Aileen