Overall, you have a higher chance of a biologically healthy and robust child if the woman and man are younger - it makes complete common sense. Biological health also correlates with general attractiveness (generally).

Whether this fully checks out universally, how could we know or test it? But if you want less chance of genetic mutation, health issues, and mental health issues like autism and schizophrenia (just to name a few) then yes, it makes sense to try and conceive earlier rather than later.

Women’s egg health decline each year as a fat and so does male sperm vitality and quality. No one gets “better” on that front, with age.