Not only have I had multiple people stop and offer help on the rare occasions I've had a flat, I've also noticed that folks show concern when I'm just stopped for a break. I'll be leaning on my top tube or sitting on the ground admiring the view, and folks will slow down to ask if everything's ok. A guy in a pickup truck even stopped and backed up to check on me one day recently when I was out riding gravel backroads (and, no, he didn't seem at all psycho).

I usually pride myself on being self-sufficient, but it's definitely nice to know that the majority of folks would be willing to help if it was needed. Definitely inspires me to offer help whenever I can.