In our area, home of the Green River Killer and several other lesser known serial killers it's drilled into us that certain predators put themselves in miserable positions in order to gain sympathy, and that you'll never meet a sociopath that you don't like.
That said, before kids, I've given rides from time to time (once to one of the most amazing ladies I've ever met). On military bases, without a second thought. In warzones and 3rd world areas, almost the same.
In farm country, I can't tell you how many times nice young men have helped ME out (young men -highschool kids by and large- in farm country, and *old* men in cities are my two major sources of 'help' when I'm traveling. And by old, I'm talking 70's and 80's, who are always thrilled -in my experience- to help a young woman or young mother with anything they might need. Directions, a place to sit down and talk for awhile, recommendations about places to eat or stay, etc. Old men are absolute treasures. And they love to flirt. Different era.).
Before kids... so often have I helped others out. Post kids... not so much. Sometimes, in VERY limited situations (like a school parking lot when a mom's car isn't starting, or neighbors). Usually people I don't know, but know OF (have seen around).