Actually Greenthumb there is something even better you can use males for, fertilizing a few buds so you have seeds for the following year. Generally people choose the two healthiest plants with the best genetics... bud size, growth rate, harvest yield.
Feminized seeds have gotten out of control, it's to the point that people are paying over 300$ for one seed! are you guys out of your minds? and if you don't want hermie ridden plants it's best to make your own strain.
Think about it, controlled fertilization allows you to improve upon your own plant adding new genetics adds new traits, and new flavors.
The only seeds you have to worry about is a strain that has higher potential for hermie, but there is a way of forcing the plant to go all male using colloidal silver sprayed on the bottom of the leaves, so it forces the plant to go "all one sex", you spray twice daily on the bottom sides of fan leaves, and also around node points. Once you decide to switch the plant over you need to keep spraying for about 2 weeks after sex shows to guarantee an all male plant. Now you have 100% pure male not a hermie, now you can grow this plant to pollinate females in a "Controlled" way.
(NOTE: You can make colloidal silver by using two pure silver wires attached to a 9v battery with alligator clips. Essentially you leave the wires in distilled water for approx 30 minutes to 1 hour depending on the silver concentration you want. If you tried 30 minutes before and you weren't able to change the sex of the plant simply use 1 hr with the 9v battery (make sure it's fresh) What will happen is the silver particles become suspended, The amount of spray you need is very little approx 1 cup per plant for the entire time from the time the plant is 3 inches tall you can start spraying, once in the morning and evening every other day.)
Take some of the pollen and place in a zip lock baggy, close one end so the pollen doesn't fall out of the baggy. Put the closed end on the bottom and place the baggy over the desired bud(s) then zip it closed, and apply blue painters tape as you can easily remove it without tearing the baggy. If you tear the baggy open you will end up with a LOT of seeds LOL, but at least you'll be able to plant a maximum number of plants.
You will leave the baggy on for 3 days, shaking the baggy daily while still being gentle enough you don't damage the female. Now carefully remove the tape, and open the top end of the baggy, slowly remove the bud from the baggy without spilling any pollen on buds you do not wish to pollinate.
Once you grow this plant out you will want to take 1 more female from the group and change her sex to male like before, once the female has turned male, grow out this plant till it produces pollen, then take that pollen and pollinate another female plant, you will then get 80-90% female, rather than 20-50% male.
Plus any time you need seeds you simply have to spray a female change her sex, and then use her pollen to pollinate a good genetic mate and you will end up with all females without cloning... So just remember, you can make "pure" males any time you need them.
Remember any males made by using colloidal silver cannot be smoked or eaten due to the high levels of silver inherent in the plant, now the silver is present in small amounts in the seeds it does not transfer to the plant once it starts growing. It's very minute.
You can turn grey if you consume to much silver, this skin condition is permanent due to silver particles being trapped in the epidermis and react with light to darken and tint the skin. Making you look like this guy.