I've got in the habit of telling DR's to squirt some F'ing Novocain into a wound before stabbing it with a needle. I had one do that once when i sliced my thumb open, jammed the needle in like three times into the gash, I didn't have much pain until he did that. Never going to happen again if i have any say.
Hell no
I have an old one with no safety bar. Fucking thing is sketchy as hell. Once had a branch split causing it to fall funny and knock me off my ladder. 15-20 ft fall. Knocked me out and had me bumped and bruised for months after.
My neighbor did one that way. It had a safety. He was cutting a hole in a barn loft. It hung or kicked and knocked him off the ladder. It fractured one vertebrae in his neck and one in his back. I heard him yelling and found him laying on the ground.