No offense but there is also a long list of why you shouldnt spay/neuter your animals (at least not too early). I'm against byb'ers and puppymills and have never bred a litter even though I have finished 2 champions of my own. Frankly, the idea of breeding in general scares me and until I am comfortable with the possibility of loosing a beloved pet and family member in whelp (will not be anytime soon) I am gonna stay far, far away from it.
All I'm saying that there are also health risks related to spaying and neutering in order to present a balanced argument.
http://www.naiaonline.org/pdfs/LongT...uterInDogs.pdf