1. It's not a deathtrap. The visible damage is not dangerous. As for unseen damage, I don't see any.
2. I'm not sure the damage is severe enough that it can be repaired. The only reason to straighten it would be to correct radically altered geometry; minor bends are hard to straighten.
3. No, I wouldn't ride it. I have enough bikes that bent ones don't interest me. I ride rusty bikes, bikes with bad paint, and so on. But not bent ones.
^^^^^^ This. Too many others out there to ride a bent one like that.