text: how common are stds?????and how long have you got to live if u get aids??? and also how dangerous is sleeping with a really damnfine backpacker unprotected? stds are very common. there is no set time for dying of aids, you can live a week, a year or ten years because you dont actually die of aids, you die from something you catch when you have aids and your body cannot fight off the infection, thats why it is aquired immune deficiency syndrome,immune deficiancy being the operative words