Reviving an old thread - no idea why it came up in my search for "snorkel for van". . .
Yeah, I often pick up hitchhikers, though I see them a lot less frequently than I used to.
I've never been threatened or freaked by anyone I've ever picked up.
To be completely honest, I've had a lot more trouble from people who picked me up when I was hitchhiking than I ever had from anyone I picked up. Jumped out of a moving car one time when I was around 17, 'cause the driver was coming on to me. Another time threatened by a driver and his nephew. Yet another time, 15yo and hitchhiking to the Smokies by myself, I had to calmly turn my hand over to show a driver the knife I had strung to my wrist.
If you've been on the road a lot and have hitchhiked any distance yourself, you should be able to trust your first impression--your gut--when you spot someone hitchhiking down the shoulder, or when you are hitchhiking and about to get in someone's vehicle. Some guys are just down on their luck but are damned decent guys. Some are on R&R and trying to get home or to see their honey. Others just live on the fringe and feel like they don't fit in a fast moving society. Doesn't mean they're criminal or going to hurt you.
If you don't trust anyone you see hitchhiking, might be you're a lot more narrow minded than they are.