Ernest, you are a great service provider, and I’ll for sure rate you highly.
You’ve answered my questions and I am sure I can now dig in and do what I want with my site, using a mix of both.
Custom fields for numbers are fine, and certainly better than taxonomies for age/height etc., and far easier to fix per page if a typo, and of course sliders are perfect on the front end for my purposes.
I love how WordPress has enabled people to create content, and developers like you to offer solutions; and the internet in general for simply getting us connected in ways unheard of a generation ago.
For all the social media ills of the internet, there are far more benefits. Long may it continue.
Kind regards, with thanks,
David.