Would selling this trailer be irresponsible?

2 Retired wrote:
You sound like me. I wouldn't be able to look at my reflection in a mirror if I made this deal. Follow your heart. There's so much more about living than money. There will be another buyer.

Withholding the sale of goods and services because there is something you do like about the buyer you don't like IS something that is falling under increased scrutiny. If they don't go through with this sale they better hope the buyer doesn't feel they are in some protected class and are being unfairly discriminated against.
Personally, I would find it very offensive if someone I didn't know was telling me what I can and cannot purchase. If I show up with the money, I better be walking away with the merchandise if it is still for sale when I get there.