Depends XD both my older kids were reasonably easy when young (but I am comparing them rather unfairly to their autistic/adhd younger brother who really was a massive handful), then puberty happened and oldest was lucky to survive to his 15th birthday and after coming close middle child is on track to make hers.
Society will only advance/improve glacially while people are desperately clinging to the status quo (by conflating it with traditions, some of which are definitely worth keeping).
I count myself lucky that Smallsteps is as easy as she has been (which in some ways, hasn't been easy). The guy who just had the baby also has one child with DS and life has been hard for them and I know several others who have had all kinds of various issues. Parenting sucks, but someone has to do it.
The status quo will kill us all eventually.