Can often depend who you had them with.
My children were planned and wanted but no I don’t think they’ve improved my life. I had a brilliant life pre-DC though... now it’s drudgery.
I look ALOT worse, sleep deprived, irritable, never ending cleaning and cooking when I barely needed to do either before I had them, very rarely get a night out/holiday, very rare I get to pursue the hobbies/interests which make me happy, very little time to read, a lot less money, stuck living in one place when I used to hop from country to country.
Do I love them? Yes. Have they improved my life? A resounding no from me!