What is a good age gap?

Megan • Mommy of 2 precious babes 😍 Love my family and can`t wait to watch it grow!
We are TTC for about 2 months now, my son is almost 15 months.. I'm just curious if 2 years is a good age gap or too close together. I don't want my kids too f as r apart. But was just curious on other peoples experience