Just think about all the hassles you will not have to deal with through that process, the birth, raising all those babies, and the veterinary bills. Surgery is performed under anesthesia and animals are usually back on their feet into normal activities within 24 to 72 hours. This slight discomfort is not harmful and prevents the suffering and death of hundreds of unwanted animals that could be born if you do not spay or neuter your pet. Surgery for this procedure is expensive. Prices vary, but there are numerous animal control and humane societies that offer low cost spay and neuter clinics.
Some veterinarians also offer a discount, just ask.
If you have a litter and take proper care of it your cost factors are much more than this procedure would ever be. If this section still has not convinced you to neuter your animal, go visit a shelter. I challenge you to spend some time there. Look them in the eyes and explain why you do not want to neuter your pet.