No, there is no point in letting your pet female dog put a litter. However, there are many benefits to neutering or spaying your pet dog. These benefits include reducing the likelihood of mammary tumors later in a dog's life, reducing the urge to roam the neighbourhood, reducing the likelihood of cystic ovary and uterine infections, reducing the incidence of prostate disease later in life, marking and helping prevent splashing. And also reduces the surplus of unwanted puppies.