Fixed cats live longer. Spaying decreases the likelihood of cats developing certain types of cancers.
Friends of mine literally last week had to put their cat down because she developed breast cancer and rapidly deteriorated (we’re talking painful skin ulcers here.) If the cat had been spayed at a young age, she would likely still be here.
And as others have said, spaying is the wise choice in case she were ever to accidentally get outside.
I love him