It's best to become educated yourself and make your choices based off of research and what your own opinions are.
Please take a second to read this and know that I'm not against spay/neuter...just "when". And sometimes that means that it may be harder on you because you'll have to learn how to correct some behaviors that you may/may not encounter- (pet ownership)
http://www.caninesports.com/SpayNeuter.html http://www.mmilani.com/commentary-200509.html http://www.ncbi.nlm.nih.gov/sites/en...&dopt=Abstract