Unless you want your own batch of seeds of course. Being this hard to get seeds where im at, id let it go to seed. Youd still have bud to smoke too, though not as much.
Pull the seeds and youll still have stuff to smoke on. Pull some of the balls and let others pollinate even. Youll still get a ton of seeds and more bud to seed ratio. Ive never had problems with fem seeds. Never had an auto-fem turn male on me either like you have. Would be good seed tho...