It certainly was when I let Sparky get pregnant all those years ago. I got her in 1992 and she had three kittens in 1993. Everything went swimmingly and I never worried as i had no idea how many things there were to worry about! She carried on feeding the kittens after I got her neutered, and the confidence I got from that encouraged me to foster a number of cats with kittens for a local rescue. It's a different story with Lola partly because I know so much more and partly because if anything had gone wrong it would be because I deliberatetly choose for her to get pregnant - took her to stud and so on. However she is proving to be a great mother and she delivered all her kittens without any help from me. Breeding feels like a whole series of hurdles - choose a breed, show a neuter, do some stewarding, move to a suitable house, get a suitable kitten, wait for her to start calling while looking for a suitable stud, get her to stud, hope she doesn't stop calling with a long journey, wait for her to pink up, wait for the rest of the pregnancy, worry about her delivering safely and naturally, worry that the kittens are healthy, worry about kitten weight gains... Done all those (still doing the last one) and the next ones on the horizon are working out what sexes the kittens are, deciding if one of the girls is a keeper and finding food homes for the rest of them. Feel exhausted after writing it all down!