I had gone to a quilt guild in town and didn't feel welcomed. I am not young. I'm turning 45 this year but my friend and I both felt as if we were being snubbed. We were definitely the youngest people in the group.
A year or so later I started a local chapter of the Modern Quilt Guild and we have a nice wide range of quilters. Most of them are under 35 which is super. I find it refreshing and love the modern movement.
Long story short.. you might want to seek out a group that is more welcoming. If you lived closer to me, you'd be welcome to hang with us. We're a very off beat group - but not all groups are like that.
Don't give up