One of the things that you have to take into account is that submissions are not super easy ways of finishing a fight, they require just as much skill and dedication to develop as an effective striking system does. Quick submissions show a severe lack of skill in that area in the opponent(ie maybe your favorite fighter should have trained more submission defense rather than be a one dimensional fighter.... for example Carwin) , one could make the same argument for 8 second knockouts, they don't make for a very prolonged, "exciting" fight either. Not everyone necessarily feels that a knockout is a more "honorable" win, one could argue that the strikers are just as scared to get submitted, so they attempt to get a knockout early in the match because they are scared of the fight hitting the floor. I believe it is boxing culture which has lead to the belief that striking is a more manly way of finishing fights rather than submissions and throws.
4 years Brazilian Jujitsu Experience
2 years Muay Thai