I think the problem with making a blanketing statement that "everyone" needs to try it just once, is the number of deer that would be shot and never recovered due to poor hits.
I am not so sure, because of the newer, faster bows with letoffs of 80%, some modern compound archers take shots beyond their limitations, just as traditional archers may as well. I don't know if there is any reliable available statistics, but I'd venture to say a good traditional equipment bowhunter limiting his shot to say 20 yds. is probably as successful as a compound bowhunter who sets his limit at say 40 yds. or beyond.
I believe that is the key........knowing your limitations and that is an individual thing. Agreed though that the actual process of shooting traditional equipment is harder.