The one reason for all to consider is the exposure of airsoft. Yes we want people to know and play our beloved sport. Yet on the other side is the fact that its so crazy intense that you have to tell everyone! So a seventeen year old telling all his friends is more likely to create a wave of other under-agers than an eighteen year old simply due to the whole grouping of ages in our school systems. Yes the average eighteen year old has younger friends but they also will be eighteen soon enough.