Guess everyone have different definition of fun depend on their mindset, point of view and environment.
Raising children and watching them grow up become a good human being and can live their life healthily have it's fun in it. Just read this long journey in a form of short writing already a joy itself, not to mention when it's experienced thoroughly, looking back and seeing the positive outcome after all of the hard work, surely 100% worth living and lots of fun.
Congratulations for being a good mother and also a good friend for all of your kids. 😊