As for me, and to get back to the purpose of this thread, I have shot and like metal riser takendowns for 20+ years. I have also shot wooden riser bows but gave them to my kids. Like was said before, it is just a matter of what you like in your archery tool of choice.
I like the lines of many metal riser bows. Just from a practical or engineering perspective you can make them slimmer or more interesting with metal than you can with wood.
I like the fact that I can try out different grips with one riser instead of buying different risers.
I like the adjustability of the metal risers, although my go to bow doesn't have anything other than a centershot cut riser. I use padding to get where I need it to be.
I think, purely unscientific statement, that the extra mass helps to absorb vibration and therefore makes it a quieter bow. I also like the feel of that mass in my hand.
I like the fact that a metal riser is only about 25% of the cost for a bow and I can put my $$$ towards amazing limbs which is what really matters, at least IMHO.
I don't like how it feels in the winter when it would make my hand numb but some wrapping on the grip solves that problem.
My future/dream bow is going to be built on a metal FB T/D A-riser that I got from Papalapin a few years ago. I have always loved the lines of a Bear Super Kodiak and the FB TD. It will have #@1 limbs in 45#-50# on it that I will buy once I finish funding two sets of college tuition.
For me, it is about function, shootability, looks, and of course what I can afford. But of course, as was mentioned above, it is always about what each of wants, and anything else doesn't matter.