When do you think is a good age to start childcare? Would love to hear what age worked for you and why.

I send my younger daughter to childcare when she's 18 months old as I wanted tk return back to workforce . I realized that her language & social network improved . Also , more independent , wanted to do certain things on her own , like removing / wearing shoes But you have to be prepared that they'll fall sick even more often . My baby used to fall sick every month , sometimes 3 weeks later . After 6 months , her immunity is used to childcare viruses & seldom fall sick .