At one time, the question would have been better worded "Are you one of the few that have never shared a bed with a person of the same sex that wasn't a brother or father? There was even a time back in frontier days when the person sharing your bed was even a total stranger. Times have changed. We have better motels and more people can afford to pay for motel rooms.
However, I would still say a vast majority of guys have shared a bed with another guy. Still, there are youth groups and meetings where youth sometimes have to share a bed with a youth they have never met. Some well known professional trips for senior high youth require four youth to a room and since groups rarely come in 4,8 12 etc sizes rooms and beds are shared by youth who are not even from the same state. My sons all three at different times went on trips like that as senior hi students.
Up until 10 years ago, it was standard for in a room of four on a youth trip for one of the bed partners to be an adult. At that time, no one thought anything about it. In fact, churches required it. That was before the priests scandals of the early 1990's Today, some churches believe that it is better to have four high school boys without adult supervision even if they get drunk during the night or spend the night in the girls room than take a chance on one of the adults getting sued or arrested for improper sexual advances.
Other churches weighing the two bad possible outcomes, have the boys /girls select with one gets to sleep on the floor or the three boys share a bed, which if it is queen size that is not too bad. Under the second choice,there is an adult present to see that the boys don't get into severe mischief and yet no youth is asked to sleep with an adult that is not a family member. No youth needs to be left alone in a room with an adult however with th4 door closed.
I'm not sure whether the OP meant only since being an adult or not. But teens certainly are sexually mature and therefore the possible tension is the at least the same and probably much greater. And at least where I live, very few kids get out of high school without going on at least one youth trip somewhere as a school group or as a church group.
So that means most, at least Americans, will answer yes to the question.