no you only need male and female humans to make kids named Bud..lol..but no seriously you are right..as a beginner I am sure your mostly interested in having some fat buds to smoke..so yeah you don't want to keep any males around once you can recognize them in the flowering stage..the only things males are good for is pollinating your females if you are wanting to have some extra seed around for future grows...comes in handy especially the price of some strains..if your growing a real expensive strain and only have a few seeds then its worth to pollinate a few buds atleast..that is if you want to grow that strain later..hope that helps..