I'm 57, I don't have a recumbent and split my rides between my Raleigh Competition and Waterford, with a Trek for the grocery/errand runs.
So today I spent some time on the Little Miami Trail near Cincinnati and my observations are as follows:
1. 4 bents with riders all around my age and all smiled waved and we greeted each other.
2. About 8 leisure riders and 6 were friendly.
3. 6 walkers, 4 friendly.
4. 4 Armstrong wannabes, none friendly.....I guess my lowly steel bikes don't measure up.
I greet every individual while riding and if they don't reciprocate...I could give a rat's #$$, but it's nice when they do.